【导语】高二时孤身奋斗的阶段，是一个与寂寞为伍的阶段，是一个耐力、意志、自控力比拚的阶段。但它同时是一个厚实庄重的阶段。由此可见，高二是高中三年的关键，也是最难把握的一年。为了帮你把握这个重要阶段，免费高二频道整理了《高二英语上册必修四知识点：First aid》希望对你有帮助！！
1. first aid 的意思是“急救”，例如：first aid to the injured 给予伤员的急救。
短语联想：
give/offer aid 援助 come to sb's aid 帮助某人
teaching aids 教具 medical aid 医疗救护
with the aid of 借助于
get injured 受伤，在现代英语中大量地出现了由“get + 及物动词不达意的过去分词”构成的被动语态，这叫 get - 型被动语态。又如：
The computer got wasdamaged when we were moving. 我们搬家的时候，电脑碰坏了。
My bike is getting is beingrepaired row. 我的自行车正在修理。
2. Protect 动词，“保护、维护”，用于句式“protect + 名词 + against/from + 名词”。
例如：
e.g. He is wearing sunglasses to protect his eyes from the strong sunlight. 他带着太阳镜以挡强烈的阳光。
短语联想：
Keep... from... 不让/避免
stop... from ... 阻止
prevent...from ... 妨碍/防止
disable... from... 使……失去能力/资格
save... from... 挽救、拯救
3.depend on 取决于。例如：
e.g. The amount you pay depends on where you live. 你付多少取决于你住哪里。
词义拓展
depend on 依靠，依赖：His family depends on him. 他的一家人全靠他养活。
依赖，信任：We are depending on you to finish the job by Friday. 我们相信你在星期五前能完成这项工作。
4. squeeze 动词，意思是“榨取”、“挤出”，例如：squeeze an orange 榨橘子
常用句式
squeeze + 名词 + outof/from + 名词，例如：
e.g. Those blackmailers intended to squeeze more money out of him.
那些*者打算向他榨取更多的钱。
over and over again 再三地。例如：
I’ve told you over and over again not to do that.
我再三告诫你不要那样做。
【同步练习题】
1. A way must be thought of the fire_____. It’s too dangerous .
A. to stop; from spreading B. to keep; spreading
C. preventing; spreading D. keeping; from spreading
答案：A
分析：think of away to do sth. 想出一个办法做某事。若选B，则第二空应用from spreading。
2. If we can’t borrow the money, we’ll have to without.
A. supply B. manage C. support D. stand
答案：B
分析：manage withoutsth.应付某事。句意为“我借不到钱，只好将就了。”
3. The street was named after a great man _ his great contributions to the city.
A. in honor of B. instead of
C. in case of D. in need of
答案：A
分析：句意为“这条街以一个伟人的名字命名，以纪念他为城市做出的贡献。”
4. What would have happened , as far as the river bank?
A. Bob had walked farther B. if Bob should walk farther
C. had Bob walked farther D. if Bob walked farther
答案：C
分析：根据主句的谓语动词“would have happened”，可以断定此题考查“与过去事实相反”的虚拟语气。从句中谓语动词用过去完成时，可省去连词if将had前置。
5. I insisted to see a doctor, but he insisted nothing ____wrong with him.
A. on him to go; should be B. he went; be
C. he go; was D. he should go; is
答案：C
分析：前一个insist意为“坚持要求;一定要”，接宾语从句时，从句的谓语动词用should+do;后一个insist表示“坚持说，坚决认为”，其后接陈述语气的从句，谓语动词用所需的各种时态。
6. Unless you wear boots, you may get ___ by snakes.
A. eaten B. broken C. bitten D. killed
答案：C
分析：get bitten被咬伤。
7. When the doctor tells you to , he means to ask you to draw a .
A. breath deeply; deeply breath B. breathe deep; breath deeply
C. breathe deeply; deep breath D. breath deep; deep breathe
答案：C
分析：第一空缺少动词，用breathe，被副词deeply修饰;第二空缺少名词，用breath，被形容词deep修饰。
8. Jane’s pale face suggested that she ill, and her parents suggested that she a medical examination.
A. be; should have B. was; have
C. should be; had D. was; has
答案：B
分析：第一个suggest意为“表明”，接从句时，从句中谓语动词用所需的时态;后一个suggest意为“建议”，接宾语从句时，从句中谓语动词用“should+do”。
9. The children when they realized they were lost.
A. frightened B. surprised C. astonished D. paniced
答案：D
分析：panic：惊慌;恐慌，A,B,C均为及物动词，与句子结构不吻合。
10. Be careful with that match. That straw easily.
A. catches fire B. is on fire C. sets fire D. sets on fire
答案：A
分析：“小心，火柴! 麦秆容易着火。”强调动作，用catch fire。Be on fire着火了，强调状态。set on fire相当于set fire to…放火烧……