她没用多久就把他说服了。
He retired long before the war. 他在战争之前早就退休了。
请完成 P217 小试身手
P217 小试身手
Long before he was born, his grandpa _______.
A√. had died
B. passed away
before
P216-[4] 补充
It may be many years before the situation improves. 这种状况或许要过很多年才能得到改善。
before
long before not long before
before long = so?on
P216-[4]
在…以前很久 不久
while
P215-[2] 补充
We must have been burgled while we were asleep. 我们睡觉时一定让贼入室偷了。
during the time that something is happening 在…期间；当…的时候
while
P215-[2] 补充
当…发生时
after or as soon as sth. happens
在…发生之后、一…就
used to mention a type of event or situation when talking about what happens on occasions of that
type 在…发生之后、一…就（类似于条件）
汤姆很擅长理科，而他的兄弟则不可救药。
表示对比
used to contrast two things
while
P215-[2] 补充
While I am willing to help, I do not have much time available.
尽管我愿意帮忙，但是没有多少时间。
虽然；尽管
到二十一岁时，他就已经察觉到，他一 走动就难免摔倒。
by
P217-[5] 补充
By the age of 21 he had already begun to notice that it was difficult to move around without falling over.
到二十一岁时，他就已经察觉到，他一 走动就难免摔倒。
used at the beginning of a sentence
as
Longman:
P215-[3] 补充
while or when
正当…时候
Oxford:
while something else is happening 当…时；随着
as
P215-[3] 补充
表示伴随
Longman: As time passed, things seemed to get worse.
You can go swimming while I'm having lunch. 我吃午饭时你可以去游泳。
at the same time as something else is happening 在…的hile Tom's very good at science, his brother is hopeless.
P215-[1]-b 翻译
When I opened the door, I was shocked by what I saw. 当我打开门时，我被我所看到的东西震惊了。
P215-[1]-b 翻译
I was taking a walk in the garden near my neighborhood last night when I heard a vicious dog
all the time that sth. is happening 在…的过程中
while
P215-[2] 补充
during the time that something is happening 在…期间；当…的时候
at the same time as something else is happening 在…的过程中
他出生后不久，他的祖父就去世了。
我们来看一道中考题和一道高考题
2014 中考真题
By the end of last week, she _______ in the west of China for two months helping the homeless children.
A. will stay C. would stay
P114 小试身手
_______ he was going out, it began to snow.
A. After
√C. As
B. While D. Till
as, when, while
P216 区分用法 补充
a. 引导短暂性动作的动词，优先用when, as。 b. 表示从句的动作发生于主句动作之前，用when。 c. 表示时间推移，用as。 d. 表示突然，用when。 e. 表示类似于条件时，优先用when。
A. would grow
B. has grown
C. has been growing
√D. had grown
by
P217-[5] 补充
By the age of 21 he had already begun to notice that it was difficult to move around without falling over.
到本月底，我们将完成生产计划 。
by
P217-[5] 补充
by the age of
by the time
by the end of
by短语表示过去的时间，则配合过完。 by短语表示将来的时间，则配合将完。
2014 中考真题
By the end of last week, she _______ in the west of China for two months helping the homeless children.
when
Longman
P215-[1] 补充
When mix with water the powder forms a smooth paste.
和水混合以后，这种粉末会形成均匀的糊状。
used to mention a type of event or situation when talking about what happens on occasions of that
C. had dead
D. had been dead E. died
P217 小试身手
Not long before he was born, his grandpa had died /passed away.
他出生前不久，祖父过世了。
After he was given birth, his grandpa passed away before long.
随着时间的流逝，事情变得更加糟糕了。
Oxford: As she grew older she gained in confidence. 随着年龄的增长她的信心增强了。
as
Longman:
P215-[3] 补充
I saw Peter as I was getting off the bus.
我下公车的时候看见了彼得。
A. will stay C. would stay
B. has stayed
√D. had stayed
2013 高考 黄浦二模
A latest report by Taobao said that visitors through wireless devices _______ from 10 million in 2010
请完成 P216 小试身手
P216 小试身手 Tom is very outgoing, _______ (when/ w√hile/as) Jane
is shy and quiet.
Some people waste food _______ (as/when/w√hile)
others haven’t enough. while在两句话都表示转折
B. has stayed
√D. had stayed
2013 高考 黄浦二模
A latest report by Taobao said that visitors through wireless devices _______ from 10 million in 2010
to 300 million by the end of last year.
type 在…发生之后、一…就（类似于条件）
when
after
P215-[1] 补充
Oxford 在…之后
while, as没 有这个功
能
just after which
一…就、刚…就、突然
at or during the time that 在…时候；在…期间
when
P215-[1] 补充
Oxford Call me when you've finished.
before before
P216-[4] 补充
在…以前 earlier than the time when
才 not…until
before
P216-[4] 补充
It may be many years before the situation improves. 这种状况或许要过很多年才能得到改善。