高二英语同步课程
《完形填空之词语辨析》麻雪玲
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老师传授典型题详细办法
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为学生推送同类型题，掌握解题方法
3. 非谓语动词（不定式，分词，动名词）的否定式：把not放在to do; doing; 的前面。
It’s important not to worry.
He said he deeply regretted not being able to help.
Not knowing what to do, Shelly asked advice of her friend.
He reproached me for not having told it to him.
4. not与除谓语以外的其他句子成分连用：
Come early, but not before six.
It’s working, but not properly.
I believe he will succeed, though not without some difficulty.
not用在I hope; I believe; I’m afraid; I guess; I suppose; I expect之后，构成省略句。
—Will it snow today ?
—I hope not.
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