II. Language - Unit 4
Grammar (Trang 44 SGK Tiếng Anh 10 Global Success)
<div id="sub-question-6" class="box-question top20">
<p><strong>Grammar 1</strong></p>
<p dir="ltr"><strong>Past simple vs past continuous with <em>when</em> and <em>while</em></strong></p>
<p dir="ltr"><strong>1. Choose the correct verb form in each of the following sentences.</strong></p>
<p dir="ltr">1. While Lan <em>was working / worked </em>as a volunteer in the countryside, she met an old friend.</p>
<p dir="ltr">2. I was revising for my civics class when my dad <em>was telling / told</em> me about the volunteer Job.</p>
<p dir="ltr">3. We saw many unhappy children while we <em>were helping / helped </em>people in remote areas.</p>
<p dir="ltr">4. He was sorting the donations when he <em>was realising / realised</em> how generous people were.</p>
<p><strong>Phương pháp giải:</strong></p>
<p dir="ltr"><strong>Cấu trúc:</strong></p>
<p dir="ltr">When + S + Ved (quá khứ đơn), S + was/ were + Ving (quá khứ tiếp diễn)</p>
<p dir="ltr">While S + was/ were + Ving (quá khứ tiếp diễn), S + Ved (quá khứ đơn)</p>
<p dir="ltr">Trong đó:</p>
<p dir="ltr"><strong><em>- Thì quá khứ tiếp diễn:</em></strong> diễn tả hành động đang xảy ra trong quá khứ, hành động kéo dài</p>
<p dir="ltr"><strong><em>- Thì qúa khứ đơn:</em></strong> diễn tả hành động ngắn, chen ngang</p>
<p><strong>Lời giải chi tiết:</strong></p>
<table border="1">
<tbody>
<tr>
<td>1. was working</td>
<td>2. told</td>
<td>3. were helping</td>
<td>4. realised</td>
</tr>
</tbody>
</table>
<div dir="ltr" align="left"> </div>
<div dir="ltr" align="left"><strong>1.</strong> While Lan <strong>was working</strong> as a volunteer in the countryside, she met an old friend.</div>
<p dir="ltr"><strong>2.</strong> I was revising for my civics class when my dad <strong>told</strong> me about the volunteer Job.</p>
<p dir="ltr"><strong>3.</strong> We saw many unhappy children while we<strong> were helping</strong> people in remote areas.</p>
<p dir="ltr"><strong>4. </strong>He was sorting the donations when he <strong>realised </strong>how generous people were.</p>
<p dir="ltr"> </p>
</div>
<div id="sub-question-7" class="box-question top20">
<p><strong>Grammar 2</strong></p>
<p dir="ltr"><strong>2. Combine the two sentences using <em>when</em> or <em>while</em> where appropriate.</strong></p>
<p dir="ltr">1. They were cleaning the streets. It started to rain.</p>
<p dir="ltr">2. I was watching TV. I saw the floods and landslides in the area.</p>
<p dir="ltr">3. Tim was searching for employment opportunities. He found a job advert from a non-governmental organisation.</p>
<p dir="ltr">4. They decided to help build a community centre for young people. They were visiting some poor villages.</p>
<p><strong>Phương pháp giải:</strong></p>
<p dir="ltr"><strong>Cấu trúc:</strong></p>
<p dir="ltr">When <em>(khi)</em> + S + Ved (quá khứ đơn), S + was/ were + Ving (quá khứ tiếp diễn)</p>
<p dir="ltr">While<em> (trong khi)</em> S + was/ were + Ving (quá khứ tiếp diễn), S + Ved (quá khứ đơn)</p>
<p><strong>Lời giải chi tiết:</strong></p>
<p dir="ltr"><strong>1. </strong>While they were cleaning the streets, it started to rain.</p>
<p dir="ltr"><strong>Hoặc:</strong> They were cleaning the streets when it started to rain.</p>
<p dir="ltr"><strong>2. </strong>While I was watching TV, I saw the floods and landslides in the area.</p>
<p dir="ltr"><strong>Hoặc:</strong> I was watching TV when I saw the floods and landslides in the area.</p>
<p><strong>3. </strong>While Tim was searching for employment opportunities, he found a job advert from a non-governmental organisation.</p>
<p dir="ltr"><strong>Hoặc:</strong> Tim was searching for employment opportunities when he found a job advert from a non-governmental organisation.</p>
<p dir="ltr"><strong>4.</strong> They decided to help build a community centre for young people while they were visiting some poor villages.</p>
<p dir="ltr"><strong>Hoặc:</strong> When they decided to help build a community centre for young people, they were visiting some poor villages.</p>
</div>
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