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三、查漏补缺。(根据句意、图片或首字母提示填空,完成句子)
1. I know _______ he is so happy now.
1. I know _______ he is so happy now.
答案：
why
解析：句意为“我知道他现在为什么这么开心。”，“why”（为什么）符合语境。
解析：句意为“我知道他现在为什么这么开心。”，“why”（为什么）符合语境。
2. Don't t_______ in the library.
答案：
talk
解析：图书馆里通常不能说话，“Don't talk”（不要说话），首字母“t”提示，填“talk”。
解析：图书馆里通常不能说话，“Don't talk”（不要说话），首字母“t”提示，填“talk”。
3. It _______ "Danger!" We should keep away from it.
答案：
means
解析：句意为“它意思是‘危险！’”，“means”（意思是）符合，主语“It”是第三人称单数，用means。
解析：句意为“它意思是‘危险！’”，“means”（意思是）符合，主语“It”是第三人称单数，用means。
4. The man is s_______ in the restaurant.
答案：
smoking
解析：图片提示可能是吸烟，“is”后接现在分词“smoking”（吸烟），首字母“s”提示，填“smoking”。
解析：图片提示可能是吸烟，“is”后接现在分词“smoking”（吸烟），首字母“s”提示，填“smoking”。
5. I _______ know what the sign means. Can you tell me?
答案：
don't
解析：根据“Can you tell me?”（你能告诉我吗？）可知“我不知道”，填“don't”。
解析：根据“Can you tell me?”（你能告诉我吗？）可知“我不知道”，填“don't”。
6. —_______ I smoke here?
—No，you _______. Don't you see that _______?
—No，you _______. Don't you see that _______?
答案：
Can；can't；sign
解析：第一空用“Can”（能）表请求许可；否定回答用“can't”；“that”后接名词“sign”（标识），句意为“—我能在这吸烟吗？—不，你不能。你没看到那个标识吗？”。
解析：第一空用“Can”（能）表请求许可；否定回答用“can't”；“that”后接名词“sign”（标识），句意为“—我能在这吸烟吗？—不，你不能。你没看到那个标识吗？”。
7. The monkeys are all _______ at Bobby's bananas. They are h_______.
答案：
looking；hungry
解析：“look at”（看），“are”后接现在分词“looking”；猴子看香蕉可能是饿了，“hungry”（饿的），首字母“h”提示，填“hungry”。
解析：“look at”（看），“are”后接现在分词“looking”；猴子看香蕉可能是饿了，“hungry”（饿的），首字母“h”提示，填“hungry”。
8. There's a dog b_______ you. _______ careful!
答案：
behind；Be
解析：“behind you”（在你后面），首字母“b”提示填“behind”；“Be careful!”（小心！）是固定搭配。
解析：“behind you”（在你后面），首字母“b”提示填“behind”；“Be careful!”（小心！）是固定搭配。
四、对号入座。(从方框中选择合适的单词并用其适当形式填空)
ask, play, can, be, take, have
Li Ming liked _______ in a river. But there wasn't a river near his new house. He _______ not very happy.
He _______ his mother, "Is there a river near here?" "No，there _______," his mother said. "But there _______ two pools (池塘) in a park near here. We _______ play there."
Then，his mother _______ him to the park. They _______ a good time there.
ask, play, can, be, take, have
Li Ming liked _______ in a river. But there wasn't a river near his new house. He _______ not very happy.
He _______ his mother, "Is there a river near here?" "No，there _______," his mother said. "But there _______ two pools (池塘) in a park near here. We _______ play there."
Then，his mother _______ him to the park. They _______ a good time there.
答案：
playing；was；asked；isn't；are；can；took；had
解析：“like doing sth”（喜欢做某事），填“playing”；“He”后接be动词，过去时用“was”；“asked”（问）符合语境；“No, there isn't”（不，没有）；“two pools”是复数，用“are”；“can”（能）表许可；“took”（带）是“take”的过去式；“had a good time”（玩得开心）是固定搭配。
解析：“like doing sth”（喜欢做某事），填“playing”；“He”后接be动词，过去时用“was”；“asked”（问）符合语境；“No, there isn't”（不，没有）；“two pools”是复数，用“are”；“can”（能）表许可；“took”（带）是“take”的过去式；“had a good time”（玩得开心）是固定搭配。
五、牛刀小试。(按要求完成句子)
1. There are some signs here. (改为否定句)
1. There are some signs here. (改为否定句)
答案：
There aren't any signs here.
解析：在be动词“are”后加“not”（aren't），“some”变为“any”。
解析：在be动词“are”后加“not”（aren't），“some”变为“any”。
2. We can't smoke in the restaurant. (改为祈使句)
答案：
Don't smoke in the restaurant.
解析：祈使句否定形式用“Don't+动词原形”。
解析：祈使句否定形式用“Don't+动词原形”。
3. No swimming. (改为同义句)
We _______ _______ here.
We _______ _______ here.
答案：
can't swim
解析：“No swimming”意为“禁止游泳”，即“We can't swim here”（我们不能在这游泳）。
解析：“No swimming”意为“禁止游泳”，即“We can't swim here”（我们不能在这游泳）。
4. No eating or drinking. (改为同义句)
We _______ _______ _______ _______ here.
We _______ _______ _______ _______ here.
答案：
can't eat or drink
解析：“No eating or drinking”意为“禁止吃喝”，即“We can't eat or drink here”（我们不能在这吃喝）。
解析：“No eating or drinking”意为“禁止吃喝”，即“We can't eat or drink here”（我们不能在这吃喝）。
5. The sign means "Be quiet". (对画线部分提问)
答案：
What does the sign mean?
解析：对“Be quiet”（内容）提问用“What”，主语“the sign”是单数，助动词用“does”，动词“means”变为原形“mean”。
解析：对“Be quiet”（内容）提问用“What”，主语“the sign”是单数，助动词用“does”，动词“means”变为原形“mean”。
6. Don't shout here. They are having lessons. (写出应答句)
答案：
Sorry, I won't.
解析：对“Don't shout here.”的应答通常是道歉并表示不会再做，“Sorry, I won't.”（对不起，我不会了。）符合语境。
解析：对“Don't shout here.”的应答通常是道歉并表示不会再做，“Sorry, I won't.”（对不起，我不会了。）符合语境。
六、学以致用。(阅读短文,选择正确的答案)
This is a story about a schoolboy Bill. One day his mother told him to post a letter. Bill walked down the street. He didn't see a letter box on the street, but he saw a basket with a sign on it. The sign said, "PUT LITTER IN THIS BASKET." "I can read," said Bill. "But they didn't write the word right."
Bill put the letter in the basket. Then he ran home to tell his mother about the basket. "Oh, Bill," said his mother. "You put the letter in a litter basket. A litter basket is for old paper and other things that are not good."
"Oh, is that so?" said Bill. "Yes, it is. The word is LITTER，not LETTER. Now go and get out the letter quickly and post it," said his mother.
This is a story about a schoolboy Bill. One day his mother told him to post a letter. Bill walked down the street. He didn't see a letter box on the street, but he saw a basket with a sign on it. The sign said, "PUT LITTER IN THIS BASKET." "I can read," said Bill. "But they didn't write the word right."
Bill put the letter in the basket. Then he ran home to tell his mother about the basket. "Oh, Bill," said his mother. "You put the letter in a litter basket. A litter basket is for old paper and other things that are not good."
"Oh, is that so?" said Bill. "Yes, it is. The word is LITTER，not LETTER. Now go and get out the letter quickly and post it," said his mother.
答案：
（题目未完整显示，根据后续内容推测为选择题，此处按常见题型补充并解答）
（ ）1. Bill's mother asked him to _______.
A. buy some food
B. post a letter
C. go to school
D. visit his grandfather
答案：B
解析：根据“One day his mother told him to post a letter.”可知选B。
（ ）1. Bill's mother asked him to _______.
A. buy some food
B. post a letter
C. go to school
D. visit his grandfather
答案：B
解析：根据“One day his mother told him to post a letter.”可知选B。
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