目的状语从句引导词有哪些？

大家好，欢迎来到IT知识分享网。

表示目的状语的从句可以由that, so that, in order that, lest, for fear that, in case，for the purpose that等词引导；这些引导词可分为经纬分明的两组：

1、that, so that, in order that, for the purpose that 为了…

He lowered his voice so Doris couldn’t hear.

他压低了声音，这样多丽丝就不会听到了。

Why don’t you start out early so that you don’t have to hurry?

你干吗不早点出发？这样就不用急匆匆的了。

We shall let you know the details soon so that/in order that you can/may make your arrangements.

不久我们将会让你知道详情，以便你们能够做出安排。

I’ve decided to learn photography in order that I may record the beauty of nature.

I got up early so that I could catch the first bus.

我起得很早，目的是为了赶上头班公共汽车。

I drove at a steady 50 mph so as to save fuel.

为了省油，我把车速保持在每小时50英里。

2、for fear (that)、in case、lest意为以免，以防

Shut out the window lest/in case it should rain.

关上窗以防下雨。

The victims all seemed afraid to say the facts for fear it might start trouble.

受害人似乎都不敢说出真相，怕引起麻烦。

She pulled away from the window lest anyone see her.

她从窗口躲开了，免得有人见到她。

I stayed all day at home in case (that) you called.

我整天待在家里以防你打电话。

3、上述两组引导词加not后可以互相转化：

I got up early so that I could catch the first bus.

我起得很早，目的是为了赶上头班公共汽车。

I got up early lest I could not catch the first bus.

我起得很早，以防赶不上头班公共汽车。