高中英語 Unit 4 Astronomy the science of the stars1教案 新人教版必修3

1、Unit 4 new words and expressions1. theoryin theory 理論上 in practice 實(shí)際上Your plan is good in theory, but it doesnt work in practice.2in time 1) The storm was in time to stop before the sports meeting. 終于 2) Youd better return it in time. 及時(shí) 3) Youll learn how to do it in time. 遲早，總有一天 on time 3. unlik

2、e dislikeUnlike John, Tom dislikes playing football.4. harmful be harmful to 對(duì)有害The sun can be harmful to your skin.Smoking is harmful to your health.harm n & v 損害，傷害 do harm to對(duì)有害harmless adj. 無害的5. in ones turnWhen its in my turn, Im too excited to speak.He cooked the meal in his turn this week.by

3、 turns 輪流 We drove the car by turns.in turn 依次，反之They gave their names in turn.take turns to do sth 輪流做某事6. prevent sb (from) doing sthstop sb (from) doing sthkeep sb from doing sth在被動(dòng)語態(tài)中，from都不可省。The rain prevented us (from) going there.We were prevented by the rain from going there.We should take

4、measures to prevent the river from being polluted.7. puzzle n.&v.Its quite a puzzle to us why he did that.The question puzzled them.puzzled adj. She listened with a puzzled expression.puzzling adj. We felt puzzled at these puzzling questions.8. pull n.& v.Give the rope a good pull. 用力拉一下繩子。Help me m

5、ove the piano, you push and Ill pull.pull down 拆毀 pull away 駛離，開走 pull in （火車等）到站，進(jìn)站 pull through 度過難關(guān)/危機(jī) pull up停下 pull apart 拉開9cheer up I wrote that song just to cheer myself up. He cheered up at the news. Cheer up! The result isnt too bad.10. now that now that相當(dāng)于since,引導(dǎo)原因狀語從句，that可省去。另外不可和so連用。

6、 Now that everyone is here, lets begin our meeting. Now (that) you have grown up, you must stop this childish behavior. Now (that) you are ready, we can go now.11. watch out (for sth)= look out (for sth)Watch out! There is a car coming.Watch out for thieves.Warming up 1. circle 1) v. 畫圓圈；盤旋 The teac

7、her circled the mistakes in red ink. The plane circled the airport before landing.2) n. 圓, 圓形的東西,循環(huán)2. match 1) v. a.找相似或相配之物 matchwith 使和相配 b.(物與物)相配 (suit, fit), 相等,比得上Her shoes match her dress, they look very well together.The hotel cant be matched for good service and food. 2) n. 火柴, 對(duì)手Reading1.

8、What it was to become was uncertain until when the dust settled into a solid globe.be to do sth. 1) 表示”應(yīng)當(dāng) / 必須做某事” ,通常用于通知或說明書里.The books you borrowed are to be returned before July 5.2) 表示“按計(jì)劃或安排將要做某事”，其完成式則表示“本來打算做某事”。We are to meet at the school gate.We were to have gone to Beijing last week.3) 表

9、示“將來不可避免要發(fā)生的事”All questions are to be answered later.4) 用于與將來事實(shí)相反的虛擬條件句。If it were to rain tomorrow, we would stay at home.2. This produced a chain reaction, which made it possible for life to develop.it 做形式賓語 make it + adj. / n. +( for sb.) to do / -clauseWe make it a rule to get up at 6 oclock eve

10、ry morning.以it做形式賓語的動(dòng)詞還有：find, think, consider, feel, believe, take, imagine, suppose, regard等。I found it interesting to study French.We consider it a pity that you didnt come to the party.He didnt make it clear when and where the meeting would be held.3. as well as 意為“不但而且”；“和一樣好”She is clever as w

11、ell as beautiful.My family as well as I are glad to see you.4. for the first / second time “第一/二次”，在句中作狀語。the first time “第一次時(shí)”，在句中作連詞，引導(dǎo)時(shí)間狀語從句。It was ten years ago that I met Mary for the first time, and I knew we would be good friends the first time I met her.另外句型It / This is/was the first time th

12、at 表示“這是第幾次做”, 從句中用完成時(shí)態(tài)。This is the first time that I have seen him.Using language1. Then we were off.Be off 出發(fā)，離開，食品變質(zhì)，不供應(yīng)This milk is off.The fish is off today, sorry sir.2. get close to 接近，靠近c(diǎn)lose adj. 近的, 緊密的，親密的，關(guān)系近的close adv. 不遠(yuǎn)地，近地close v. 關(guān)閉closely adv. 緊密地，密切地，嚴(yán)密地She stood close to her mother.She is a close friend of mine.His house is close to the factory.The prisoners were closely guarded.high / highly deep/ deeply wide/ widely3. twice as far as 倍數(shù)表達(dá)法 times as + 原級(jí) as Asia is four times as large as Europe. times +比較級(jí) +than Asia is four t