选修七unit3 重点短语
1.witness sth目击，见证
witness for为…作证
witness to (doing) sth证明做某事
witness to having done sth证明做过某事
a witness to sth某事的证人
bear/give witness to sth为…作证
2.make/provide accommodation for为…提供住宿
3.pause on/upon在...上停留
make a pause停顿, 喘口气
without a pause不停地
4.drag one’s feet故意拖延
drag down拖垮
drag in拉进去
drag on拉长,拖延
5.urge sb/sth on催促人/物前进
urge sb to do sth催促某人做某事
urge sb into doing sth 催促某人做某事
urge that sb (should) do sth极力主张,强调
6.abandon sth/sb放弃,遗弃
abandon oneself to沉溺于…
abandon doing sth放弃做某事…
7.help…out协助某人摆脱困境或灾难
help sb with 在…方面协助某人
help sb (to) do 协助某人做某事
with the help of在…协助下
can’t help doing忍不住做某事
can’t help but do 不得不做某事
8.reflect sth/sb in sth映出人/物的影像
reflect on/upon sth仔细思考
9.be/become aware of/that明白,意识到
10.upside down颠倒,混乱,上下翻转
turn sth upside down把…翻得乱七八糟sort out sth
11.(be) scared to death吓死了
be scared of 害怕
be scared of doing
be scared to do 害怕做
12.the Antarctic南极洲
13.sort out分类,整理
sort through查看并挑选出
14.ahead of在…之前,领先
go ahead用吧,前进
get ahead胜过,超过
look ahead 向前看
15.hold up举起,推举,延误
hold back防碍,抑制
hold down压低,压抑
hold on等下,别挂断,继续，坚持
16.a pack of一包,一
17.let go放走,松手
let sb down让某人失望
let out 发出，泄露
let…in 让…进来
let…alone/be 不管，不干涉
18.feed on吃,以…为食
feed…on/to以…饲养
feed…with/into 给…添加
重点句型：
现在分词被动语态形式做状语
1.Being protected by a thick wall, they felt they were quite safe.有一堵厚墙掩护着，他们感觉很安全。
现在分词被动语态形式做复合宾语
2.You will find the topic being discussed in our school.你将会发现这个问题在我们学校正在被讨论。
As 引导时间状语从句，being attacked 做宾语补足语
3.As we drew closer, I could see a whale being attacked by a pack of about six other killers.当我临近时，我看见一头大鲸鱼正受到约六头虎鲸的攻击。
When 引导定语从句
4.It was a time when the killer whales, or “killers” as they were then called, helped the whales catch the baleen whales that were on their annual migration.那个时期，虎鲸（当时被称为杀手）协助捕鲸人在每年须鲸迁徙时捕捉须鲸。
Where 引导地点状语从句
5.The water was quite shallow but where the reef ended, there was a steep drop to the sandy ocean floor. 海水是浅的，但是到了珊瑚礁的尽头，就有一个陡坡，一直下降到满是沙子的海底。
选修七 Unit 4 重点短语
1.hear from 收到…信
hear of 听人说起，听到…消息
hear about 听说（某事）
hear out 听完某人的话
2.（be）dying to do 渴望、极想
    （be） dying for + n
3.  the other day 不久前的一天
4.be relevant to +n 与…相关
    have relevance to +n
5. adjust A to B 调整A去适合B
adjust to sth /doing sth 适合于
adjust oneself to +n 使自己适合于
make an adjustment 作出调整
6. participate in sth /doing 参加
7.dry up 干涸
dry out 使干透
dry off 把…弄干
8. say /think /decide otherwise
说/认为/决定并非如此
or otherwise 相反
9.donate sth to sb /sth 把某物指给
give / make /present a donation to +n
10.in need (in want ) 在困难中，在危急中
in need of = in want of 需要
satisfy one’s needs 满足某人的需要
There is no need for sb to do sth
某人没必要做某事
in order 正常，有序
in place 适当
in danger 危险中
in silence 沉默
in pain 在痛苦中
in store 贮藏，即将发生
11.distribute sth to /among sb
把某物分发给某人
12.operate a machine 操作机器
operate a shop 开商店
operate on sb 动手术
come /go into operation 开始运转实施起来
in operation 操作中，运转中
13.up to +n 高达，多达，上至
It is up to sb to do 由某人负责做
14.stick out 坚持到底，伸出，突出
stick up 竖起
stick to +n 坚持，粘贴
stick at sth 坚持不懈
15.make /drink a toast to sb /sth 为…干杯
16.what if 假如…会怎样
so what ? 那又怎样
what about … ?怎么样
what for ? 干吗
what though 即使…有什么关系
what with 因为
17.not … but 不是…而是
not only … but (also )
either … or
neither … nor
以上连接主语时用就近原则
18.enough 用作adj 常见搭配是：
enough +n to do
n + enough to do
We have enough time /time enough to get to the airport.
enough用作副词常见搭配是：
adj /adv + enough (for sb )to do
The book is easy enough for you to need .
enough作代词时用法有：
enough of (doing ) sth 太多…
I have had enough of you..
重点句型
1、    doubt + wh 引导宾语从句
To be honest ,I doubt whether I’m making any difference to these boy’s lives at all.
2、 with + 宾语+ 宾补
Tom’s father ,sack ,led us to his house ,a low bamboo hut with grass sticking out of the roof.
3、 do/does/did +动词原形的强调句
But last weekend another teacher ,Jenny and I did visit a village which is the home of one of the boys.
4.介词+关系代词引导的非限制性定语从句
Sometimes I wonder how relevant chemistry is to these students,most of whom will be going back to their villages after year 8 anyway.
He has ten cousins ,the youngest of whom is clever .
Jack was a famous doctor ,with the help of whom they succeeded in an operation .
She suffered from illness ,in which case he husband had to stay the home .

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