题目内容
17.---Where's my eraser?---I _______know.
| A. | am not | B. | not | C. | aren't | D. | don't |
分析 ---我的橡皮在哪里?
---我不知道.
解答 答案:D.表达的是客观事实用一般现在时,这里是表达的否定,know是实意动词,主语I,故借助于do构成否定,故答案是D.
点评 简单句中谓语动词为行为动词时,要根据时态选用do的相应形式,把肯定句变为否定句.如:
The little girl wants to go there.?→The little girl doesn't want to go there.
He did his work yesterday.→?He didn't do his work yesterday
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5.-Thanks for telling me.-________________( )
| A. | Thank you. | B. | No problem. | C. | You're right. | D. | Great! |