課本中不會(huì)教你的[T]678　to say nothing of，not to speak of，not to mention和let alone

678　to say nothing of，not to speak of，not to mention和let alone

◎ 這幾個(gè)短語均意為“更不用說，更談不上”，通常用于否定句，有時(shí)也可用于肯定句，對(duì)其后的相關(guān)部分進(jìn)行強(qiáng)調(diào)。

① to say nothing of，not to speak of和not to mention后接名詞或動(dòng)名詞。

He knows only a little about English grammar，to say nothing of English rhetoric. 他對(duì)英語語法知道得很少，更談不上英語修辭了。

② let alone后接名詞或動(dòng)詞。

I have never heard of her before，let alone know her well. 我以前從沒聽說過她，更不用說了解她了。