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usEFul sB

要区分be useful for somebody和be useful to somebody的不同,关键就是要知道介词for和to后接名词时的意义和作用以及具体句型: 1 for: after some adjective, noun, and verb phrases, you use for to introduce the subject of the action in...

be useful for sb.对…有好处; 用于形容词、名词和动词短语后,引出其后动词不定式的主语 be useful to sb.对某人有用;针对某人有用(句子的主语可以是人或物) 例句: It is useful for somebody to do something对某人干某事是有用的 It is very ...

选择 for。 for sb. to do sth. 是不定式复合结构,介词短语 for sb. 介绍的是不定式的逻辑主语,这种结构属于一种凝固格式,不能随意改动。

可以等同。

This tool is useful to me.

用for 是因为前面的adj是来描述do后面的sth. 用of 的话,adj就用来形容sb的 it is adj of sb to do,这里的形容词是形容人的性格特征的,如nice,kind clever,foolish,smart,都是形容人的, it is adj for sb to do就是普通的形容词,如hard,impossibl...

be natural for sb. 例如: It is natural for young people to be critical of their parents at times and to blame them for most of the misunderstandings between them.

1)sb. is more use表达不对。正确表达方式有两种: sb. is of more use或者sb. is more useful。 2)be of use: 意思是:有用 These dictionaries are of great use. 这些词典十分有用。 3)useful: 【用法】 useful的基本意思是“有用的,有益的...

be useful to do sth it is helpful to do sth. 做……是有好处的 It is helpful for sb. to do sth. 某人做……是对他有好处的 这两个都是it 做形式主语 helpful 是表示“有好处”,而不是“有助的” it is helpful in doing sth. sth. is helpful to s...

be useful to sb 或者 be useful to do sth

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