文档介绍：必修五unit5知识点详解
1 Aid (v)帮助; 援助=help sb
帮助某人去做…. aid sb to do
在…事帮助某人 aid sb in …
He aided me in business.
I aided her to continue her study.
At Christmas, many organizations aid the poor.
n  /U/帮助; 援助
在某人的帮助下with the aid of
为了帮助… in aid of
Teachers give their lessons with the aid of computers.
He raised money in aid of the sick.
 
知识拓展：
give/offer aid 援助             
come to sb.'s aid 帮助某人
cut off aid （突然）终止援助       
a hearing aid 助听器
teaching aids 教具                   
medical aid 医疗救护
 
2. temporary 暂时的，临时的
temporary relief from pain短暂的解痛
temporary work/ solution临时工作/解决办法   
 3. fall ill
fall+ adj.
ill
asleep
awake
sick
silent
4 get+过去分词  表被动或状态
The computer got damaged when we were moving.
My bike is getting repaired now.
My glasses got broken while I was playing basketball.
Peter and Mary got married last year.
get done
get injured受伤
get dressed穿衣服
 get damaged遭到破坏
 get changed 改变
 get married结婚
 get infected被感染
 get broken被弄破
 get lost迷失，走失
5 injure v.   
injury to sth.   …（部位）的伤
injuries to the legs
got injured
injury
injured
hurt***，精神上的伤害（一般用语），疼痛
injure意外或事故而受伤
wound指外伤（刀、枪、剑伤）
6. bleed-blood-bloody
(v.)     (n.)    (adj.)
His nose was bleeding. = He was bleeding at the nose .= He has a bloodynose. 他在流鼻血。
bleed for为…而流血, 悲痛
bleed to death出血过多而死
lose blood流血、失血
flesh and blood血肉之躯
7. choke    vi. & vt. 窒息; 阻塞
She choked with emotion.  她激动得说不出话来。
The smoke almost choked me. 烟呛得我几乎喘不出气来。
At the bad news, he couldn't choke back his tear听到这则噩耗，他抑制不住自己的眼泪。
 The man gave a few chokes and then got his 。
adj. 最重要的，不可缺少的，本质的
1)Sun and water are essential to the growth of 。
 2)It is essential for us to set our study 。
3)It is essential that you (should) win the voter's  。
-----当用it充当主语而用它充当表语时，that 从句的谓语动词用should +动词原形 。
9. You have three layers of skin which act as a barrier against disease,…
 act