這里其實(shí)是be+of +n= 這個(gè)名詞所對(duì)應(yīng)的形容詞
這里可以寫成are very helpful
eg.be of importance=be important
The fact is that computers are of great aid to the development of science an technology中的of咋講
The fact is that computers are of great aid to the development of science an technology中的of咋講
英語(yǔ)人氣：615 ℃時(shí)間：2020-05-18 07:41:10
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