英语句型结构辨析:used to do sth、 be used to doing sth

2024-01-04 18:32:31   文档大全网     [ 字体:小 中 大 ] [ 阅读: ]

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辨析,句型,英语,used,sth
英语句型结构辨析:used to do sth、 be used to doing sth



be used to do sth/ would的用法

Ⅰ. Used to do sth.“过去常常做某事”(现在不做了),只用于过去时态。如:

① He used to get up early.过去他常早起。(现在已不这样了) ② Her mother used to go shopping on Fridays, but now she does it on Sunday.她母亲过去常在周五去购物,但现在她周日去了。

Ⅱ. Be used to (doing)sth. “习惯于做某事”,be used 是被动语态结构。可用于现在、过去、将来多种时态。Be可用get, become等代替。如: ① He will be / has been used to getting up early. 他将会/ 已经习惯于早起。

Ⅲ. Be used to do sth. “被用于做某事”, be used 是被动语态结构,其中不定式表目的,可用于多种时态。如: ① Wood is used to make paper.木材用来造纸。

[注]:used to 的否定式有两种:一是:used not to 二是:didn’t use to 如:

① My father used not to smoke. = My father didn’t use to smoke.我爸爸过去不抽烟。

② They used not to live in the country. = They didn’t use to live in the


country.

其疑问式是将used 提前,或添加助动词 did.

Ⅳ.would 是情态动词,没有象used to那样,有过去和现在的对比。不能说明是否现在还做不做。


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