課本中不會教你的[N]486　no…but和nothing but

486　no…but和nothing but

① no+名詞+but相當(dāng)于only+名詞/代詞，意為“只有”，這里的but表示“除了”。

No one but she knows the secret. 只有她知道這個(gè)秘密。

No dictionary but this one is the most useful. 只有這本詞典最有用。

② but還可構(gòu)成nothing but，nobody but，no one but，no man but，nowhere but等，也相當(dāng)于only。

It is nothing but a joke. 這只是一個(gè)玩笑。

I have nothing left but a few dollars. 我只剩下幾美元了。

Nobody but a fool would believe him. 只有傻瓜才會相信他。

你只能在這個(gè)湖里才能發(fā)現(xiàn)這種魚。

You can find this kind of fish nowhere but in this lake.

No man but a fool would believe his words. 除了傻瓜，誰也不會相信他的話。