高二英語(yǔ)First aid全單元教案
step ⅲ homework: 分小組，模擬急救現(xiàn)場(chǎng)，并配音講解，學(xué)完課文后表演
language points:
1. as if/ though
1)引導(dǎo)的從句如果是事實(shí)過(guò)可能性大，多用陳述語(yǔ)氣。常于look, seem, taste, smell, sound,ect.搭配
e.g. it looks as if it is going to rain.
it seems as if the boy has lost his way.
2)從句如果是主觀想象或夸大比喻，與事實(shí)不合，常用虛擬語(yǔ)氣。
e.g. he looks as if he were ill.（其實(shí)沒病）
he walks as if he were drunk. 他走路的樣子象喝醉了。
ex:
he is a happy-go-luck(無(wú)憂無(wú)慮的) man as if he has no worries and cares in the world.
the young man with long hair looks as if he were a woman.
2. 情態(tài)動(dòng)詞后跟上完成形式的意義和用法。
1). could have done
e.g. we could have helped that boy, even we were busy. 那天，即使我們很忙，我們本來(lái)也可以幫助那個(gè)男孩的。（本可以做，但事實(shí)沒有做）
he could have told his girl friend the secret. but i’m not very sure. 他或許已經(jīng)把這個(gè)秘密告訴他的女朋友了，不過(guò)我也并不確定。（或許已經(jīng)做過(guò)，表示對(duì)過(guò)去某事的推測(cè)）
2). must have done 一定已經(jīng)做過(guò)(表示對(duì)過(guò)去某事較有把握的推測(cè))
e.g. they must have stayed up late night-all of them looks sleepy.
他們昨天晚上肯定熬得很晚了，他們看起來(lái)全都非常疲倦。
3). should have done/ ought to have done 本應(yīng)該做(卻沒做，表達(dá)一種強(qiáng)烈的遺憾，責(zé)備之意)
e.g. they should have handed in their homework yesterday.
昨天他們本該把家庭作業(yè)交上去的。
4). needn’t have done 本不應(yīng)該（但事實(shí)上已經(jīng)做了）
e.g. you needn’t have copied the exercise book. i have one more and i can give it to you.
你其實(shí)不必抄那本練習(xí)冊(cè)，我還有一本可以給你。
3. witness
e.g. these facts are a witness to his careless. 這些事實(shí)證明了他的粗心。（n.證明，證人，目擊者）
she witnessed the accident. 她親眼看見該事故。（v.目擊，為…作證，成為證據(jù)）
4. wish
wish + that從句,從句的謂語(yǔ)動(dòng)詞要用虛擬語(yǔ)氣（動(dòng)詞用過(guò)去時(shí)，或過(guò)去完成時(shí)）
e.g. i wish that i knew the answer. 我希望我知道這個(gè)答案。
i wish i had bought it yesterday. 我希望昨天買了它。
其他接賓語(yǔ)從句用虛擬語(yǔ)氣的詞有：suggest/ advise/ propose/ insist/ decide/ order/ request/ demand/ desire/ ask, 其謂語(yǔ)動(dòng)詞用 （should）+動(dòng)詞原形
e.g. i suggest that we should start the meeting at once.
he insist that all of us should be there on time.
5. accident/ incident/ ever
1). accident 指意外或偶然發(fā)生的事故，特別是不幸的，有損害性的事故。
e.g. he was killed in a traffic accident.
注：accident為可數(shù)名詞，前面可加不定冠詞an,表示“一個(gè)”“一次”，習(xí)慣用語(yǔ)by accident為“偶然”，相當(dāng)于by chance.
e.g. i met her in the street by accident, yet she had a bad accident three days ago.
我在大街上偶爾碰見過(guò)她，然而三天前她卻遭遇了一場(chǎng)嚴(yán)重的事故。
2). incident 泛指不重要的事件，還可以指政治上有影響的重大事件。