of 在句子裡的結構疑惑

Question

His expertise in jet propulsion will be of great help to us.

可以分析依下這句的句子結構嗎?

特別是針對 of !

我知道of有 ->"的" ，跟 it is kind of you 類似這類的用法

那這邊呢 ?

為什麼雜誌上不用 a 就好了?

His expertise in jet propulsion will be A great help to us.

這樣錯嗎!

Answer 1

最佳解答

His expertise in jet propulsion will be of great help to us.

= His expertise in jet propulsion will be greatly helpful to us.

說明：

1.of + N = adj.這樣的語法通常用在文學上，口語上很少用，比如：

It’s important. = It’s of importance.

2.語氣上再強一點就變成：of great help (of + adj. + N) = greatly helpful (adv. +adj.)

3.中譯：他所專精之噴氣推進技能(知識)，對我們非常(相當)有幫助。

4.這種語法結構與it is kind of you.是不相干的。

• 登入以對解答發表意見發佈

Answer 2

重點在於"be"，它是Vi不及物動詞，後面不可接名詞

若當Vt及物動詞，一般是用於被動態

• 登入以對解答發表意見發佈

Answer 3

To me the two sentences are essentially the same, with slightly different meaning. "His expertise will be OF great help to us" is more general; while "his expertise will be A great help to us" is more specific, as if the speaker has some particular expertise in mind.

• 登入以對解答發表意見發佈