四川省成都经济技术开发区实验中学高中英语选修7配套课件：Module 4 Music Born in America- Grammar.ppt

Module 4
Module 4
Music Born in America
Grammar (I)
Read the sentence and choose the best explanation.
The moment I heard it, I knew it was a
completely new kind of music.
I only heard it for a moment…
(b) For a few seconds when I heard
it…
(c) As soon as I heard it…
(c)
What do you think of sentence it belongs to?
It belongs to Adverbial clauses of time.
Some explanations of adverbial clauses of time:
1) 时间状语从句可用 when, while, as, before, after, as soon, as, since, till / until, the moment, the minute, immediately, every time, next time, ever sine等词语引导。
when, while, as引导的时间状语从句
when用法小结:
1. when引导时间状语从句, 从句中的谓语
动词可以是延续性动词
. When I lived there, I used to go to
the beach on Sundays.
也可以是短暂性动词
. When the film ended, the people
went back home.
2. when前面的分句为when分句提供时间
背景,可翻译为“这时,突然,刚……
就……”等。这种用法有三种结构:
1) when前面的分句使用进行时
. We were drawing on the
blackboard when the teacher came in.
2) when前面的分句使用be about to
. We were about to set off when it
suddenly began to rain.
3) when前面的分句使用完成时
. We had just fallen asleep when the
bell rang.
while用法小结:    
while引导时间状语从句,从句中的谓语动词必须是延续性动词, 强调主句谓语动词所表示的动作在从句谓语动词所表示的动作发生的过程中发生或主从句两个谓语动词所表示的动作同时发生。
. Please don’t talk so loud while
others are working.
While you are sorting your things
upstairs, I’ll pack your books.