注意：只有主从句主语相同时，才能用in order to，so as to 表示目的；否则，用so that或in order that引导从句。

[即时跟踪]　完成句子

①In__order__not__to__be__heard，she pointed her finger upwards to signal that someone was moving about upstairs.

为了不让别人听到自己的声音，她竖起手指示意有人正在楼上走动。

②Tom kept quiet about the accident________lose his job.

A.so not as to B.so as not to

C.so as to not D.not so as to

答案　B

解析　so as to可表目的，其否定形式是so as not to，故选B。

2.up to 多达；到......为止，直到；从事，忙于；胜任；是......的责任；轮到

[语境感悟]

(1)(教材P16)It allows you to take photographs without a break for up to 6 hours.

它可以让你连续拍照达6个小时。

(2)It's up to you whether we accept the present or not.

我们要不要这份礼物由你决定。

(3)Up to now，the work has been quite smooth.

到目前为止，工作很顺利。

[归纳拓展]

up to now直到现在(与现在完成时连用)

be up to (doing) sth 某人能胜任(做)某事；正在干/从事着

It's up to sb to do sth 由某人负责/决定做某事。

[即时跟踪]　完成句子

①I don't think he__is__up__to__this__work.

我认为他不能胜任这份工作。

②Who do the passengers on board think it is up ________ a final decision about such a matter?

A.make B.making