10. She _____ have left school,
for her bike is still here. 表示“不可能已经离开学校了”。 can can’t 二、单句改错
1. I used to living in Hunan but now I live in Guangzhou. living→ live
因为表示“过去做某事”的used to后要接动词原形。
2. She could sang very well when she was a girl. sang→ sing
在情态动词后要接动词原形。 3. You’d better to wear rubbers, for it’s raining outside. 去掉to
由had better do sth. (最好做某事)可知。
4. I would rather to work than play. 去掉to
因would rather do sth. (宁愿做某事)。 5. I asked him whether he needs go there. needs→ need
情态动词没有人称和数的变化。
6. Something is wrong with my computer and it need repairing. need→ needs
因need作情态动词,仅用于疑问句、否定句或与whether连用,在肯定句中只能用作行为动词。本句是肯定句,need是行为动词,主语是第三人称单数,一般现在时,要加s,故改为needs。 7. I can have lent you the money. Why didn’t you ask me? can→ could
由后句“你为什么不问我(借)呢?”可知前句意为“我本来可以借这笔钱给你的。”表示“本来可以做某事但事实上却没有做”用could have done。而can have done 表示“可能已经做了某事”,这种情况也可以用could have done。
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