英語四級閱讀關(guān)鍵句：271. Decisions are made as to which

271. Decisions are made as to which information should remain in long-term memory.

譯文

關(guān)于哪些信息應(yīng)該留存于長期記憶之中的決定已經(jīng)作出。

點睛

本句的主干是Decisions are made。as to...為句子的狀語，其中which引導(dǎo)的是介詞to的賓語從句。

make a decision的意思是“作出決定”。如：

I'm really bad at making decisions. 我的確不善于決策。

as to的意思是“至于……，提到……”，也可替換為as regards。如：

There are no special rules as to/regards what clothes you should wear. 至于應(yīng)該穿什么衣服，并沒有硬性規(guī)定。

考點歸納

有關(guān)as的常見搭配還有：

so as to do sth.意為“為了做某事”。如：

The thief ran off so as not to be caught. 為了不被抓住，那名竊賊跑開了。

as for意為“至于，關(guān)于”。如：

You can stay; as for him, he can get out of my sight. 你可以留下來，至于他，他可以從我眼前消失了。

as if/though意為“似乎，仿佛，好像”。如：

It sounds as if he's been really ill. 聽起來他好像真的病了。