1、1. 时 间:
(1) 当……时侯
when,（be about to /be doing + when…）
while（延）
as（随着,一边一边）
(2) 一……就
as soon as,
the moment, the instantly, the minute, the second,
immediately, directly, instantly,
(3) time 短语 the first time,
(4) before, since
(5) not…until, until, till
2、2. 地点 Where, wherever
3、3. 条件
if , unless(=if … not) , so (as )long as , in case , on condition that, suppose/ supposing, provided that
4、4. 让步
although/ though(不和but 连用), even though/even if ，-ever, no matter-, whether …or…
5、5. 目的 So that, in order that,
for fear that, in case
6、6. 原因
because, since, now that, seeing that, considering that
7、7. 结果 so that, so … that … , such… that…
