add new grammar points, fixes

- fixed gendered language in lesson-12/workbook-6.
- added new grammar points to the grammar index. (#295)
  - Adjectives (Past Tense)
  - Adjectives (Noun Modification)

lessons-3rd/appendix/grammar-index/index.html

@@ -167,7 +167,7 @@ <h3><i class="fa">&#xf0a1;</i> News and Info</h3>
       <div id="appendix-tool" class="content-block">
         <h2 id="main-dict-title" class="title center">巻末 - Grammar Index</h2>
 
-        <p>Welcome to the Grammar Index! Here you can quickly find and review the grammar points taught in Genki. Use the quick navigation to jump to a lesson's grammar or use the quick search to find the grammar point you want to read up on.</p>
+        <p>Welcome to the Grammar Index! Here you can quickly find and review the grammar points taught in Genki. Use the quick navigation to jump to a lesson's grammar or use the quick search to find the grammar point you want to read up on.<br>If you found this page helpful, please consider purchasing a <a href="https://genki3.japantimes.co.jp/bookstores/">copy of the textbooks</a> if you haven't yet to support the authors!</p>
 
         <div class="wip">
           <div>WORK IN PROGRESS</div>
@@ -2726,12 +2726,12 @@ <h3 id="l5-p1" class="workbook-title" data-keywords="い-adjectives、な-adject
                     </td>
                     <td>
                       <ruby>元気<rt>げんき</rt></ruby><span class="ul-color">です</span><br>
-                      (I) am doing well.
+                      She is healthy.
                     </td>
                     <td>
                       <ruby>元気<rt>げんき</rt></ruby><span class="ul-color">じゃないです</span><br>
                       　(or <ruby>元気<rt>げんき</rt></ruby><span class="ul-color">じゃありません</span>)<br>
-                      (I) am not doing well.
+                      She is not healthy.
                     </td>
                   </tr>
                 </table>
@@ -2816,6 +2816,201 @@ <h3 id="l5-p1" class="workbook-title" data-keywords="い-adjectives、な-adject
             </tr>
           </table><br>
 
+          <h3 id="l5-p2" class="workbook-title" data-keywords="い-adjectives、な-adjectives、adjective conjugation、affirmative、negative">2. Adjectives (Past Tense) <span class="page-data">Genki I: p.133-134</span></h3>
+          <table class="table grammar-table">
+            <tr>
+              <td><ruby>本文<rt>ほんぶん</rt></ruby></td>
+              <td>
+                <ul>
+                  <li>
+                    ロバートさん、<ruby>旅行<rt>りょこう</rt></ruby>は<strong class="main-color"><ruby>楽<rt>たの</rt></ruby>しかった</strong>ですか。【Dialogue III: //.1】<br>
+                    Robert, <strong class="main-color">did</strong> you <strong class="main-color">enjoy</strong> the trip?
+                  </li>
+                </ul>
+              </td>
+            </tr>
+            <tr>
+              <td><ruby>説明<rt>せつめい</rt></ruby></td>
+              <td>
+                With い-adjectives, you change the last い to かったです in the affirmative. In the negative, you only need to change the present tense くない to くなかったです. な-adjectives are just like nouns, so the affirmative is でした and the negative じゃなかったです. Be careful not to confuse the two patterns, however, as it is wrong to say ×さむいでした, for example.
+                <table class="table alt-cell-color">
+                  <tr class="table-head">
+                    <td class="main-color">[Past]</td>
+                    <td>affirmative</td>
+                    <td>negative</td>
+                  </tr>
+                  <tr>
+                    <td>
+                      <strong>い-adjectives</strong><br>
+                      <span class="main-color">e.g.</span> さむい
+                    </td>
+                    <td>
+                      さむ<span class="ul-color">かったです</span><br>
+                      It was cold.
+                    </td>
+                    <td>
+                      さむ<span class="ul-color">くなかったです</span><br>
+                      　(or さむ<span class="ul-color">くありませんでした</span>)<br>
+                      It was not cold.
+                    </td>
+                  </tr>
+                  <tr>
+                    <td>
+                      <strong>な-adjectives</strong><br>
+                      <span class="main-color">e.g.</span> <ruby>元気<rt>げんき</rt></ruby>(な)
+                    </td>
+                    <td>
+                      <ruby>元気<rt>げんき</rt></ruby><span class="ul-color">でした</span><br>
+                      She was healthy.
+                    </td>
+                    <td>
+                      <ruby>元気<rt>げんき</rt></ruby><span class="ul-color">じゃなかったです</span><br>
+                      　(or <ruby>元気<rt>げんき</rt></ruby><span class="ul-color">じゃありませんでした</span>)<br>
+                      She was not healthy.
+                    </td>
+                  </tr>
+                </table>
+
+                <div class="columns-2-in">
+                  <div class="example">
+                    Ａ：テストは<strong class="main-color"><ruby>難<rt>むずか</rt></ruby>し<span class="ul-color">かった</span></strong><span class="ul-color">です</span>か。<br>
+                    Ｂ：いいえ、ぜんぜん<strong class="main-color"><ruby>難<rt>むずか</rt></ruby>し<span class="ul-color">くなかった</span></strong><span class="ul-color">です</span>。
+                  </div>
+                  <div class="example">
+                    Ａ：<strong class="main-color">Was</strong> the exam <strong class="main-color">difficult</strong>?<br>
+                    Ｂ：No, it <strong class="main-color">was not difficult</strong> at all.
+                  </div>
+                </div>
+
+                <div class="columns-2-in">
+                  <div class="example">
+                    Ａ：その<ruby>町<rt>まち</rt></ruby>は<strong class="main-color">にぎやか</strong><span class="ul-color">でした</span>か。<br>
+                    Ｂ：いいえ、<strong class="main-color">にぎやか<span class="ul-color">じゃなかった</span></strong><span class="ul-color">です</span>。
+                  </div>
+                  <div class="example">
+                    Ａ：<span class="ul-color">Was</span> the town <strong class="main-color">lively</strong>?<br>
+                    Ｂ：No, it <strong class="main-color">was not lively.</strong>
+                  </div>
+                </div><br>
+
+                The い-adjective いい (good) is irregular and has it's first syllable changed to よ as in the present tense conjugations.
+                <table class="table alt-cell-color">
+                  <tr class="table-head">
+                    <td><span class="main-color">[Past]</span> (irregular)</td>
+                    <td>affirmative</td>
+                    <td>negative</td>
+                  </tr>
+                  <tr>
+                    <td>いい</td>
+                    <td><span class="ul-color">よ</span>かったです</td>
+                    <td>
+                      <span class="ul-color">よ</span>くなかったです<br>
+                      　(or <span class="ul-color">よ</span>くありませんでした)
+                    </td>
+                  </tr>
+                </table>
+              </td>
+            </tr>
+            <tr>
+              <td><ruby>文型<rt>ぶんけい</rt></ruby></td>
+              <td>
+                <strong>affirmative</strong><br>
+                a. A-stem+かった(です)<br>
+                b. ANa+{でした/だった}<br><br>
+
+                <strong>negative</strong><br>
+                a. A-stem+{くなかった(です)/くありませんでした}<br>
+                b. ANa+{じゃなかった(です)/じゃありませんでした}
+              </td>
+            </tr>
+            <tr class="ex-list">
+              <td><ruby>練習<rt>れんしゅう</rt></ruby></td>
+              <td>
+                <ul>
+                  <li><a href="../../lesson-5/grammar-5/">Practice: Adjective Conjugation (Past Affirmative)</a></li>
+                  <li><a href="../../lesson-5/grammar-6/">Practice: Adjective Conjugation (Past Negative)</a></li>
+                  <li><a href="../../lesson-5/grammar-7/">Practice: Adjectives (Past Tense) 1</a></li>
+                  <li><a href="../../lesson-5/grammar-8/">Practice: Adjectives (Past Tense) 2</a></li>
+                  <li><a href="../../lesson-5/workbook-3/">Workbook: Adjective Conjugation (Present and Past Tenses)</a></li>
+                  <li><a href="../../lesson-5/workbook-4/">Workbook: Adjectives (Past Tense)</a></li>
+                </ul>
+              </td>
+            </tr>
+          </table><br>
+
+          <h3 id="l5-p3" class="workbook-title" data-keywords="い-adjectives、な-adjectives">3. Adjectives (Noun Modification) <span class="page-data">Genki I: p.134</span></h3>
+          <table class="table grammar-table">
+            <tr>
+              <td><ruby>本文<rt>ほんぶん</rt></ruby></td>
+              <td>
+                <ul>
+                  <li>
+                    わあ、<span class="ul-color"><strong class="main-color">きれいな</strong></span><ruby><span class="ul-color">海</span><rt>うみ</rt></ruby>！【Dialogue I: //.3】<br>
+                    Wow, what a <span class="ul-color"><strong class="main-color">beautiful</strong> sea</span>!
+                  </li>
+                </ul>
+              </td>
+            </tr>
+            <tr>
+              <td><ruby>説明<rt>せつめい</rt></ruby></td>
+              <td>
+                Adjectives in Japanese can be used to modify nouns. Simply place the adjective before the noun that you want to modify. Please note, however, that な-adjectives must retain "な" when modifying nouns.
+                <div class="example">
+                  い-adjectives:　　おもしろい<ruby>映画<rt>えいが</rt></ruby>　　an interesting movie<br>
+                  な-adjectives:　　きれい<span class="ul-color">な</span><ruby>写真<rt>しゃしん</rt></ruby>　　a beautiful picture
+                </div>
+              </td>
+            </tr>
+            <tr>
+              <td><ruby>文型<rt>ぶんけい</rt></ruby></td>
+              <td>
+                a. A+N<br>
+                b. ANaな+N
+              </td>
+            </tr>
+            <tr>
+              <td><ruby>例文<rt>れいぶん</rt></ruby></td>
+              <td>
+                <ol>
+                  <li>
+                    <div class="columns-2-in">
+                      <div class="example">きのう、<span class="ul-color"><strong class="main-color">おもしろい</strong></span><ruby><span class="ul-color">映画</span><rt>えいが</rt></ruby>を<ruby>見<rt>み</rt></ruby>ました。</div>
+                      <div class="example">I saw an <span class="ul-color"><strong class="main-color">interesting</strong> movie</span> yesterday.</div>
+                    </div>
+                  </li>
+                  <li>
+                    <div class="columns-2-in">
+                      <div class="example"><ruby>山下先生<rt>やましたせんせい</rt></ruby>は<span class="ul-color"><strong class="main-color">こわい</strong></span><ruby><span class="ul-color">先生</span><rt>せんせい</rt></ruby>です。</div>
+                      <div class="example">Professor Yamashita is a <span class="ul-color"><strong class="main-color">scary</strong> teacher</span>.</div>
+                    </div>
+                  </li>
+                  <li>
+                    <div class="columns-2-in">
+                      <div class="example"><ruby>京都<rt>きょうと</rt></ruby>で<span class="ul-color"><strong class="main-color">きれいな</strong></span><ruby><span class="ul-color">写真</span><rt>しゃしん</rt></ruby>を<ruby>取<rt>と</rt></ruby>りました。</div>
+                      <div class="example">I took a <span class="ul-color"><strong class="main-color">beautiful</strong> picture</span> in Kyoto.</div>
+                    </div>
+                  </li>
+                  <li>
+                    <div class="columns-2-in">
+                      <div class="example">ここはとても<span class="ul-color"><strong class="main-color">にぎやかな</strong></span><ruby><span class="ul-color">町</span><rt>まち</rt></ruby>です。</div>
+                      <div class="example">This is a very <span class="ul-color"><strong class="main-color">vibrant</strong> city</span>.</div>
+                    </div>
+                  </li>
+                </ol>
+              </td>
+            </tr>
+            <tr class="ex-list">
+              <td><ruby>練習<rt>れんしゅう</rt></ruby></td>
+              <td>
+                <ul>
+                  <li><a href="../../lesson-5/grammar-9/">Practice: Adjectives (Noun Modification) 1</a></li>
+                  <li><a href="../../lesson-5/grammar-10/">Practice: Adjectives (Noun Modification) 2</a></li>
+                  <li><a href="../../lesson-5/workbook-5/">Workbook: Adjective + Noun</a></li>
+                </ul>
+              </td>
+            </tr>
+          </table><br>
+
           <br><h3 id="placeholder" class="workbook-title"><em>More coming soon...</em></h3>
         </div>
 

lessons-3rd/lesson-12/workbook-6/index.html

@@ -81,42 +81,42 @@ <h3><i class="fa">&#xf0a1;</i> News and Info</h3>
       '<div class="count-problems">'+
         '<p class="sectionDesc3rd"><span class="sectionNumber3rd fa">&#xf054;</span>You live in a dormitory and you will get a new roomate. Ask the coordinator what that person is like, using ～でしょうか.</p>'+
         '<div class="problem">'+
-          'Are they Japanese?<br>'+
+          'Is she/he Japanese?<br>'+
           '{日本人でしょうか|にほんじんでしょうか|answer}。'+
         '</div>'+
 
         '<div class="problem">'+
-          'What is their major?<br>'+
+          'What is her/his major?<br>'+
           '{専攻は何でしょうか|せんこうはなんでしょうか|' + Genki.getAlts('{専攻}は{何}でしょうか', 'せんこう|なん') + 'answer}。'+
         '</div>'+
 
         '<div class="problem">'+
-          'Are they a quiet person?<br>'+
+          'Is she/he a quiet person?<br>'+
           '{静かな人でしょうか|しずかなひとでしょうか|answer}。'+
         '</div>'+
 
         '<div class="problem">'+
-          'What kind of music do they like?<br>'+
+          'What kind of music does she/he like?<br>'+
           '{どんな音楽が好きでしょうか|どんなおんがくがすきでしょうか|' + Genki.getAlts('どんな{音楽}が{好}きでしょうか', 'おんがく|す') + 'answer}。'+
         '</div>'+
 
         '<div class="problem">'+
-          'Do they smoke?<br>'+
+          'Does she/he smoke?<br>'+
           '{たばこを吸うでしょうか|たばこをすうでしょうか|' + Genki.getAlts('{たばこ}を{吸}うでしょうか', 'タバコ|す') + 'answer}。'+
         '</div>'+
 
         '<div class="problem">'+
-          'Do they have many friends?<br>'+
+          'Does she/he have many friends?<br>'+
           '{友だちがたくさんいるでしょうか|ともだちがたくさんいるでしょうか|' + Genki.getAlts('{友}{だち}がたくさんいるでしょうか', 'とも|達') + 'answer}。'+
         '</div>'+
 
         '<div class="problem">'+
-          'What kind of food do they like?<br>'+
+          'What kind of food does she/he like?<br>'+
           '{どんな食べ物が好きでしょうか|どんなたべものがすきでしょうか|' + Genki.getAlts('どんな{食べ物}が{好}きでしょうか', 'たべもの|す') + 'answer}。'+
         '</div>'+
 
         '<div class="problem">'+
-          'Do they have a car?<br>'+
+          'Does she/he have a car?<br>'+
           '{車があるでしょうか|くるまがあるでしょうか|answer}。'+
         '</div>'+
       '</div>'

lessons-3rd/lesson-5/grammar-10/index.html

@@ -76,7 +76,7 @@ <h3><i class="fa">&#xf0a1;</i> News and Info</h3>
     <script>Genki.generateQuiz({
       format : 'practice',
       type : ['multi', 'fill'],
-      info : 'Answer the questions using the given cues.',
+      info : 'Answer the questions using the given cues. {!GRI|Click here|l5-p3} to review how adjectives modify nouns.',
 
       quizlet : [
         [

lessons-3rd/lesson-5/grammar-5/index.html

@@ -76,7 +76,7 @@ <h3><i class="fa">&#xf0a1;</i> News and Info</h3>
     <script>Genki.generateQuiz({
       format : 'practice',
       type : ['multi', 'fill'],
-      info : 'Change the following adjectives into the past affirmative.',
+      info : 'Change the following adjectives into the {!GRI|past affirmative|l5-p2}.',
 
       quizlet : [
         [

lessons-3rd/lesson-5/grammar-6/index.html

@@ -76,7 +76,7 @@ <h3><i class="fa">&#xf0a1;</i> News and Info</h3>
     <script>Genki.generateQuiz({
       format : 'practice',
       type : ['multi', 'fill'],
-      info : 'Change the following adjectives into the past negative.',
+      info : 'Change the following adjectives into the {!GRI|past negative|l5-p2}.',
 
       quizlet : [
         [

lessons-3rd/lesson-5/grammar-7/index.html

@@ -76,7 +76,7 @@ <h3><i class="fa">&#xf0a1;</i> News and Info</h3>
     <script>Genki.generateQuiz({
       format : 'practice',
       type : ['multi', 'fill'],
-      info : 'This is what Robert wrote down about the trip to Okinawa. Look at his notes and make sentences.',
+      info : 'This is what Robert wrote down about the trip to Okinawa. Look at his notes and make sentences using {!GRI|past tense adjectives|l5-p2}.',
 
       quizlet : [
         [

lessons-3rd/lesson-5/grammar-8/index.html

@@ -79,7 +79,7 @@ <h3><i class="fa">&#xf0a1;</i> News and Info</h3>
       Genki.generateQuiz({
         format : 'practice',
         type : ['multi', 'fill'],
-        info : 'A and B are talking. Complete the dialogue between A and B by using the cues in A\'s dialogue.',
+        info : 'A and B are talking. Complete the dialogue between A and B by using the cues in A\'s dialogue. {!GRI|Click here|l5-p2} to review past tense adjectives.',
 
         questionsAlignLeft : true,
         quizlet : [

lessons-3rd/lesson-5/grammar-9/index.html

@@ -76,7 +76,7 @@ <h3><i class="fa">&#xf0a1;</i> News and Info</h3>
     <script>Genki.generateQuiz({
       format : 'practice',
       type : ['multi', 'fill'],
-      info : 'Look at the pictures and make comments on them, using an adjective to modify the noun.<br>Example: おいしい + たべもの = おいしいたべもの; delicious food',
+      info : 'Look at the pictures and make comments on them, using an {!GRI|adjective to modify the noun|l5-p3}.<br>Example: おいしい + たべもの = おいしいたべもの; delicious food',
 
       quizlet : [
         [

lessons-3rd/lesson-5/workbook-4/index.html

@@ -75,7 +75,7 @@ <h3><i class="fa">&#xf0a1;</i> News and Info</h3>
     <script src="../../../resources/javascript/all.min.js"></script>
     <script>Genki.generateQuiz({
       type : 'fill',
-      info : 'Complete the following problems using past tense adjectives.',
+      info : 'Complete the following problems using {!GRI|past tense adjectives|l5-p2}.',
 
       quizlet :
       '<div class="count-problems">'+

lessons-3rd/lesson-5/workbook-5/index.html

@@ -75,7 +75,7 @@ <h3><i class="fa">&#xf0a1;</i> News and Info</h3>
     <script src="../../../resources/javascript/all.min.js"></script>
     <script>Genki.generateQuiz({
       type : 'fill',
-      info : 'Complete the following problems by using adjectives to describe the nouns.',
+      info : 'Complete the following problems by using {!GRI|adjectives to describe the nouns|l5-p3}.',
 
       quizlet : 
       '<div class="count-problems">'+

lessons/lesson-5/grammar-10/index.html

@@ -75,7 +75,7 @@ <h3><i class="fa">&#xf0a1;</i> News and Info</h3>
     <script src="../../../resources/javascript/all.min.js"></script>
     <script>Genki.generateQuiz({
       type : 'multi',
-      info : 'Answer the questions about Mary and her friends.',
+      info : 'Answer the questions about Mary and her friends. {!GRI|Click here|l5-p3} to review how adjectives modify nouns.',
 
       quizlet : [
         {