学习方法 2021-08-16 326
【篇一】
否定形式: didn’t use to do sth. / used not to do sth.
如:He used to play football after school. 放学后他过去常常踢足球。
Did he use to play football? Yes, I did. No, I didn’t.
He didn’t use to oke. 他过去不吸烟。
①肯定陈述句+否定提问 如:Lily is a student, isn’t she?
Lily will go to China, won’t she?
②否定陈述句+肯定提问 如:
She doesn’t come from China, does she?
You haven’t finished homework, have you?
③提问部分用代词而不用名词 Lily is a student, isn’t she?
④陈述句中含有否定意义的词,如:little, few, never, nothing, hardly等。其反意疑问句用肯定式。 如:
He knows little English, does he? 他一点也不懂英语,不是吗?
They hardlyunderstood it, did they?他们几乎不明白,不是吗?
【篇二】
1.used to do sth.过去常常做某事
(1)否定形式:didn’t use to do sth. / used not to do sth.
Tom didn’t use to chew gum.=Tom used not to chew gum.
He used not to go shopping by car.=He usedn't to go shopping by car.
(2)疑问形式:Did+主语+use to+动词原形+其它?=Uesd+主语+to+动词原形+其它?
Did Tom use to chew gum?=Used Tom to chew gum?
Did he use to go shopping by car?=Used he to go shopping by car?
(3)反意疑问形式:①肯定did/used+主语 ②否定didn’t/usedn’t+主语
He used to play football after school,usedn’t /didin’t he?
There didn’t use to be a big house,here,did it/used it?
①He used to oke, ?
②They usedn't to like opera, ?
③They didn't use to like opera, ?
④They like opera,did they?
⑤You live in Wuhan,usedn't you?
⑥You used to like wine, ?
辨析:
Ⅰ.be/get/become+used to意为“习惯于”,从形态上看,used为形容词,to是介词,因此后面只能跟名词或动名词。
⑴他们已习惯于住在农村。 They got used to living in the countryside.
⑵他习惯于艰苦工作。 He is used to hard work.
Ⅱ.be used+带to的不定式意思是“用于做……”,可以用于各种时态的句子。例如:
⑴牛可用来耕地。 An ox is used to plough the fields.
⑵这个地方已经用于种蔬菜了。This place has been used to plant vegetables.
2.反意疑问句
①肯定陈述句+否定提问 如:Lily is a student, isn’t she?
Lily will go to China, won’t she?
②否定陈述句+肯定提问 如:She doesn’t come from China, does she?
You haven’t finished homework, have you?
③提问部分用代词而不用名词 Lily is a student, isn’t she?
④陈述句中含有否定意义的词,如:little, few, never, nothing, hardly等。其反意疑问句用肯定式。 如:
He knows little English, does he? 他一点也不懂英语,不是吗?
They hardly understood it, did they?他们几乎不明白,不是吗?
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