文档介绍：Grammar
时间状语从句,
条件状语从句,
让步状语从句
Module 5 The Great Sports Personality

___________ I was walking down the street,I saw some policemen.
_______they heard the news,they were surprised.
______the child was playing with his toys,his parents were watching TV.
They shouted slogans ____they passed the square.
when即可引导一个持续动作, 也可引导一个短暂动作, 表示从句动作和主句动作同时发生,或先于主句动作;
while只能引导一个持续动作,表示从句的动作与主句动作同时发生.
as从句动作与主句动作相并发生,常译为“边……”。
When/While
When
While
as
1) when/while/as的用法:
2) 引导时间状语的连词和短语as soon as, no sooner…than,
hardly/scarcely…when, the moment, the minute, the first time,
immediately, directly, instantly等引导的从句表示从句动作一
发生,主句的动作随即就发生,常译为“一…就…”,如:
He flew to Hongkong directly he arrived at Shanghai.
The boy burst into tears immediately he saw his mother.
其中 no sooner, scarcely, hardly放句首时, 从句应该用完成时态, 和部分倒装。

You will improve your oral English if you keep on practicing.
He will never make progress _______he works hard.
A. if B. unless
If I _____you, I would give up smoking at once.
A. was B. am C. is D. were
if和unless是最常用的条件从句连接词,unless在意义上等于“if…not”,并且语气较强。if可用于虚拟条件句,unless则不用于虚拟条件句。
unless
were
2) in case后接一般现在时、一般过去时或should, 它所引导的从句为主句的动作提供理由。
Please take your raincoat along with you in case it rains.
He always slept by the phone in case she rang during the night.
Don't go out tomorrow morning in case Mr Li e to visit you.

Whatever happens,we will not change our mind.
No matter what happens,we will not change our mind.
However difficult the work is, we will try our best to finish it in time.
No matter how difficult the work is, we will try our best to finish it in time.
whatever (whenever, however…)和no matter what (when,how…)这两种形式都可引导让步状语从句,意义无差异。
2) 形容词/副词/名词+as/though可引导一个让步状语从句,表示强调。
Though she is young, she knows so much about life.
Young as/though she is, she knows so much about life.
Though he is a child, he can speaks three languages.
Child as/though he is, he can speaks three languages.
3) even if/even t