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BE usEFul to是加Do还是加ing?

be useful to sb 或者 be useful to do sth

be equivalent to 中的to 是介词,所以后面用只能用名词性质的词,所以要用n.或doing

要看你的句子主语是什么了。如果主语是一件实际的事情,后面就用be beneficial to doing sth. 如:Reading a lot is beneficial to (improving) your english. 但是如果主语是it 作为形式主语,那么通常后面用不定式作为真正的主语,即用be bene...

to do

加to do的短语有: begin to do start to do like to do want to do decide to do plan to do agree to do hope to do fail to do 加doing的短语有: go doing enjoy doing like doing mind doing keep doing finish doing risk doing miss doin...

be equivalent to 中的to 是介词,所以后面用只能用名词性质的词,所以要用n.或doing be equivalent to 相当于

1.(1)be后的动词常用ing形式;(2)介词后面常用ing形式,如:be worried about doing sth.,be excited about doing sth.,be good/bad at doing sth.,be interested in doing sth.等;另外,有些动词后面的动词一定要用ing形式,如:enjoy,finish,...

有很多都是固定搭配, 有的be动词的话那又是一种。to do 是不定式,可用来做句子的主语,跟在实义动词后边做宾语或宾语补足语,be动词后做表语(将来时间结构),还可以跟在某些名词或形容词后做定语.在助动词或情态动词后要用do一起来构成复合谓语.

下列动词或词组后面都可以接doing: admit 承认 appreciate 感激 avoid 避免 complete完成 consider认为 delay 耽误 deny 否认 detest 讨厌 endure 忍受 enjoy 喜欢 escape 逃脱 fancy 想象 finish 完成 imagine 想象 mind 介意 miss 想念 postpo...

to 做介词时,后面+动词ing;否则,就是+动词原形。

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