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二、判断下列每组单词画线部分的发音是否相同，相同的写“S”，不同的写“D”。
()1. keep tree
()2. pick sign
()3. bin skin
()4. dead mean
()5. more for
()6. smoke cold
()1. keep tree
()2. pick sign
()3. bin skin
()4. dead mean
()5. more for
()6. smoke cold
答案
1. S；2. D；3. S；4. D；5. S；6. S
解析
1. keep /kiːp/，tree /triː/，画线部分发音相同，填S；
2. pick /pɪk/，sign /saɪn/，画线部分发音不同，填D；
3. bin /bɪn/，skin /skɪn/，画线部分发音相同，填S；
4. dead /ded/，mean /miːn/，画线部分发音不同，填D；
5. more /mɔː(r)/，for /fɔː(r)/，画线部分发音相同，填S；
6. smoke /sməʊk/，cold /kəʊld/，画线部分发音相同，填S。
2. pick /pɪk/，sign /saɪn/，画线部分发音不同，填D；
3. bin /bɪn/，skin /skɪn/，画线部分发音相同，填S；
4. dead /ded/，mean /miːn/，画线部分发音不同，填D；
5. more /mɔː(r)/，for /fɔː(r)/，画线部分发音相同，填S；
6. smoke /sməʊk/，cold /kəʊld/，画线部分发音相同，填S。
三、从方框中选出合适的单词，并用其正确形式填空。(每个单词限用一次)
go，slip，clean，throw，move，keep，plant，make，sit，should
1. We to the city ten years ago.
2. My brother usually to school on foot.
3. more trees can help keep the air clean.
4. my house clean，I should often do the housework.
5. The cleaners(清洁工) the city early every day.
6. Mike on the wet floor yesterday.
7. The boy the orange skin on the floor just now.
8. —What the air dirty?
—Black smoke from factories did.
9. We listen to the teachers at school.
10. The monkeys in the trees now.
go，slip，clean，throw，move，keep，plant，make，sit，should
1. We to the city ten years ago.
2. My brother usually to school on foot.
3. more trees can help keep the air clean.
4. my house clean，I should often do the housework.
5. The cleaners(清洁工) the city early every day.
6. Mike on the wet floor yesterday.
7. The boy the orange skin on the floor just now.
8. —What the air dirty?
—Black smoke from factories did.
9. We listen to the teachers at school.
10. The monkeys in the trees now.
答案
1. moved
2. goes
3. Planting
4. To keep
5. clean
6. slipped
7. threw
8. made
9. should
10. are sitting
2. goes
3. Planting
4. To keep
5. clean
6. slipped
7. threw
8. made
9. should
10. are sitting
解析
1. 由ten years ago（过去时间标志）可知用一般过去时，填move的过去式moved；
2. 由usually（一般现在时标志）及主语my brother（第三人称单数），填go的第三人称单数形式goes；
3. 需动名词作主语，填plant的动名词Planting（句首首字母大写）；
4. 表目的“为了保持”，填不定式To keep（句首首字母大写）；
5. 由every day（一般现在时标志）及主语cleaners（复数），填clean的原形；
6. 由yesterday（过去时间标志），填slip的过去式slipped；
7. 由just now（过去时间标志），填throw的过去式threw；
8. 答句用did替代实义动词，表过去动作，填make的过去式made；
9. 结合句意表“应该”，填情态动词should；
10. 由now（现在进行时标志）及主语monkeys（复数），填sit的现在进行时形式are sitting。
2. 由usually（一般现在时标志）及主语my brother（第三人称单数），填go的第三人称单数形式goes；
3. 需动名词作主语，填plant的动名词Planting（句首首字母大写）；
4. 表目的“为了保持”，填不定式To keep（句首首字母大写）；
5. 由every day（一般现在时标志）及主语cleaners（复数），填clean的原形；
6. 由yesterday（过去时间标志），填slip的过去式slipped；
7. 由just now（过去时间标志），填throw的过去式threw；
8. 答句用did替代实义动词，表过去动作，填make的过去式made；
9. 结合句意表“应该”，填情态动词should；
10. 由now（现在进行时标志）及主语monkeys（复数），填sit的现在进行时形式are sitting。
四、根据上下文及首字母提示，完成对话。
A：Hi，Bob. W do you live?
B：I live in a small town.
A：Is it c now?
B：Not really. There's lots of r in the river and in the street.
A：What about the a?
B：Black smoke makes it d.
A：I'm sorry to h that. Do people do anything to keep the town c?
B：Yes. People put rubbish in the b and they p more trees.
A：That's wonderful. Your hometown will be more and more beautiful.
B：Thank you.
A：Hi，Bob. W do you live?
B：I live in a small town.
A：Is it c now?
B：Not really. There's lots of r in the river and in the street.
A：What about the a?
B：Black smoke makes it d.
A：I'm sorry to h that. Do people do anything to keep the town c?
B：Yes. People put rubbish in the b and they p more trees.
A：That's wonderful. Your hometown will be more and more beautiful.
B：Thank you.
答案
Where; clean; rubbish; air; dirty; hear; clean; bins; plant
解析
1. 根据答语“I live in a small town.”，结合首字母W，判断是询问居住地点，填Where；2. 根据答语提及的垃圾内容，结合首字母c，判断是询问城镇是否干净，填clean；3. 根据“in the river and in the street”的语境，结合首字母r，填rubbish；4. 根据答语的“Black smoke”，结合首字母a，判断询问空气状况，填air；5. 黑烟会使空气变脏，结合首字母d，填dirty；6. 固定表达“I'm sorry to hear that.”，结合首字母h，填hear；7. 结合语境“保持城镇”，首字母c，填clean；8. 垃圾要放进垃圾桶，结合首字母b，填bins；9. 表达“种树”的动作，结合首字母p，填plant。
