Unit 5 Meeting your ancestors 教案
unit 5 meeting your ancestors 教案核心單詞
1. alternative
n.可供選擇的事物；（兩者或以上）可能的選擇
adj. 供選擇的, 二選一的
常用結(jié)構(gòu)：
have no alternative but to do sth.
只能做某事；除¡¡外別無(wú)選擇
we have no alternative but to go on.
除了繼續(xù)下去,我們別無(wú)選擇。
there was no other alternative but to fight till the victory.
除了戰(zhàn)斗到勝利,別無(wú)選擇。
聯(lián)想拓展：
alternatively adv. 或者，二者擇一地
alternate vt. 使交替；vi.交替；adj. 交替的；輪流的
高手過招：
(1)單項(xiàng)填空
in this school, the students have three courses, and seven courses. （¡¤01¡¤陜西師大附中月考）
a. required; alternative b. requiring; alternative
c. required; alternate d. requiring; alternate
解析：選a。require(尤指根據(jù)法規(guī)) 規(guī)定、需要，此處用過去分詞required修飾courses，因?yàn)閮烧咧g為被動(dòng)關(guān)系。后空意思為¡°選擇，選其一¡±，alternative符合句意。
(2)單句改錯(cuò) （原創(chuàng)）
①i had no alternative but report him to the police.
②you have the alternative to speaking or keeping quiet.
③tom and harry do the work on alternative days.
答案：①report前加to ②to→of
③alternative→ alternate
2. arrest
vt. 逮捕，拘留，吸引(注意)
n.[c]逮捕
常用結(jié)構(gòu)：
be arrested for sth. 因某事而被捕
arrest one s attention吸引某人的注意
under arrest被捕；被拘留
the criminal was arrested yesterday.那名罪犯昨天被捕了。
what she did arrested my attention. 她所做的吸引了我的注意力。
高手過招
用適當(dāng)?shù)慕樵~或arrest 的適當(dāng)形式填空 （原創(chuàng)）
①i got arrested careless driving.
②her uncle was arrest, but nobody knew the reason.
③five youths in connection with the attack.
④the public applauded the of the criminal suspect.
答案：①for ②under ③were arrested ④arrest
3. preserve
v.保護(hù),維持,保存
常用結(jié)構(gòu)：