Unit 3
1.allow+名词/doing
allow sb to do sth→sb be allowed to do
2.get sth done
3.choose to do sth
4.stop doing
stop to do
5.either 用于否定句
too 用于肯定句
6.get to+地点→reach+地点→arrive in+地点
get to+地点→reach+地点→arrive at+地点
A:没有地点只能用arrive
B:地点是副词用get there/reach there/arrive there
7.pass the exam
fail the exam
8.the other day 前几天
9.concentrate more on 更加关注…
10.be good for… 对…有益/害
be bad for…
11.keep…+形容词
keep…doing
12.both…and…
13.have an opportunity to do…
14.finish doing
15.look good on sb
16.at least
17.be asleep
be sleepy
18.have a day off…
19.agree with…
20.get in the way of…
21.worry about…=be worried about…
22.nothing but+动词原形
23.happen sth happen to sb
happen sth happen in sp
※What happened…?
What has happened…?
只有时态变化
24.be serious about doing…
25.the only thing(that)…
26.a few/few +可数名词
a little/little +不可数名词
※a little+形容词(比较级)
a little+单数可数名词“一个小的”
27.care about…
28.only then+倒装句
29.have a chance to do sth.
have a chance of doing sth.
30.before,after+doing sth…
