高中英语必修二U n i t4知识点
Unit 4 Wildlife protection
【短语归纳】：
1.die out灭亡；逐渐消失
2.in peace和平地；和睦地；安祥地
3.in danger (of) 在危险中；垂危
4.in relief 如释重负；松了口气
5.burst into laughter突然笑起来；大声笑了出来
6.protect...from保护……不受……(危害)
7.pay attention to注意 https://www.doczj.com/doc/b812799271.html,e into being形成；产生
9.according to按照；根据……所说 10.so that以致于；结果【知识点总结】：
1.Their numbers may decrease.
decrease vi. & vt. 减少；（使）变小或变少
decrease to …减少至… decrease by…减少了…
e.g. By 1881, the population of Ireland had decreased to 5.2 million. Student numbers have decreased by 500.
拓展：reduce to/reduce by减少到…/减少了…
increase to /increase by 增加到…/增加了…
2. As a result these endangered animals may even die out.
show mercy to/have mercy on 怜悯/同情/可怜……
with mercy仁慈地 without mercy残忍地；毫不留情地
at the mercy of任由……摆布 It is a mercy that... 真是万幸……
e.g. She begged the president to have mercy on her husband.
The poor cat is at the mercy of the naughty boy.
5.They allowed tourists to hunt only a certain number of animals if they paid the farmers.
certain adj. 确定的；一定的；某一
(1)be certain of/ about sth.：对…有把握（=be sure of/about sth.）
be certain to do sth.：一定会做… to a certain extent：一定程度上
for certain=for sure无疑地；确定地make certain (that...)弄清楚；弄明白
It is certain that…：肯定，一定会….（不能说It is sure that…）
e.g. We are certain to have a good time at the party tonight.
It is certain that something is wrong with the machine
6.I'm protecting myself from mosquitoes.
protect...from...保护……不受……(危害)
protect...against保护……以防……(强调较大的事情，如敌人的入侵、天灾等)
keep＋宾语＋from doing
stop＋宾语＋(from) doing
prevent＋宾语＋(from) doing 阻止……做某事
注意：被动语态里from均不可省去，而在主动语态中，与stop/prevent搭配的from可以省略。
7.It contains a powerful drug which affects mosquitoes.
contain vt. 包含；容纳；克制(强烈的感情等)；抑制
contain oneself克制自己 container n.容器；集装箱；货柜
易混辨异contain, include, including, included
1)contain意为“包含；容纳；里面装有”，侧重“整体内有”，在某一范围或容器
内能容纳某物。其宾语与主语常是同位关系，不用于进行时态。此外，contain还有“控制，克制”之意。
2)include意为“包含；计入；包括”，只能用于表示所包含之物中的一部分，其后的宾语往往是主语的一部分。
3)including可以作介词连接介词短语，放在所包括的东西之前。
4)included是过去分词性质的形容词，放在所包括的东西之后。
e.g. She was too angry to contain hersel
f.
The hall can contain/hold/admit 3,000 people.
Many people like tennis, including me/me included.