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《Grammar》集体备课PPT课件优质课下载
Grammar2 Adverbial clause of reason
(原因状语从句)
复习：Grammar 1
常见的引导时间状语从句的连词有：when,while,as,after,
before,since,ever since , till,until,
as soon as,once, whenever,
no sooner…than,hardly…when,
the moment,every time ,
each time,next time,
immediately，directly等。
When
a.When he was orbiting in the capsule,
he took photographs of planet earth.
b. When Yang landed, Premier WenJiabao telephoned the Control Centre to offer his congratulations.
when 后面连接的是可延续性动词(continuous verb)还是非延续性动词(non-continuous verb)？
小结：When 引导的时间状语从句中的谓语动词既可以是_________ ，也可以是_________ 。
延续性动词
非延续性动词
Observe and conclude:
Compare and conclude
2. a. It was raining when we left for the station.
b. When the students heard the teacher's footsteps, they all stopped talking.
（比较句子当中从句与主句谓语动作之间的先后关系）
小结：从句的动作可以和主句的动作_________发生，也可以_________主语的动作发生。
同时