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1、2022年人教版高中英語必修一Unit 4《Earthquakes》（第4課時(shí)）word教案
教學(xué)目標(biāo)：
詞匯：contract expand liquid solid
短語：get away from
語法：分?jǐn)?shù)表達(dá)法
重難點(diǎn)突破：
1. Put the words in pairs or groups:
air——gas——oxygen contract——expand earth——sun——moon gas——liquid——solid
2. Put words in the right place.
electricity iron meta
2、l steel air glass
natural:
man-made:
both:
3.Two-thirds of the earth's surface is water. 海洋占地球表面的三分之二
(1). 分?jǐn)?shù)表達(dá)法
英語中表示分?jǐn)?shù)時(shí)，用基數(shù)詞作分子，序數(shù)詞作分母，當(dāng)分子大于一時(shí)，分母要用復(fù)數(shù)形式。分子和分母之間可以用連字符連接，也可不用。
例如 ： 1/3 one third ( 或 one-third); 3/5 three fifths (three-fifths)
(2) 當(dāng)某物的幾分之幾作主語時(shí)，如果此物體本身為可數(shù)名詞復(fù)數(shù)，則謂語動(dòng)詞
3、用復(fù)數(shù)形式，若為可數(shù)名詞單數(shù)或不可數(shù)名詞，謂語動(dòng)詞則用單數(shù)形式。
例如： One third of the students don't know the answer to the question.
One third of one's life is spent on the bed. 人生的三分之一是在床上度過的。
Three fourths/Three quarters of the watermelon has been eaten up by him
四分之三的西瓜都被他吃光了。（即那個(gè)西瓜的四分之三）
拓展 ：用法類似的詞語還有 half, quarter,
4、 most, percent, rest 等。
翻譯練習(xí)： (1). 我們學(xué)校 1/4 的學(xué)生英語學(xué)得不好。
(2). 地球上 96.5% 的水是海洋水。
(3). Say the number: 12,345,678,900
billion million thousand
(4).Say the percentages: % : percent
4.get away from 從（某地等）走開，離開，擺脫掉
She struggled to get away from her attacker. 她掙扎著想擺脫那個(gè)侵犯她的人.
5、
I'm afraid I can't get away from the meeting. 我恐怕難以從會(huì)議中抽身。
典型例題：
The little boy has ______ many bad habits after going to school.
A. got away from B. broke away C.kept away from D. stayed away from
強(qiáng)化訓(xùn)練：
(一)單詞填空：
1. We use __________ （電）to provide power for machines .
2. If you ___
6、______ （加熱）water it will boil.
3. When you heat metal it _________ .
4. If you ______water it bees steam .
（二）Choose the correct answer to plete each sentence：
1. In figures , a million is ( ) . A. 100,000 B. 1,000,000 C.100,000,000
2. Another way of saying 50 pe
7、rcent is ( ) . A. a quarter B. half C. a half
3.Four-fifths is the same as ( ) . A. 40 percent B.50 percent C. 80 percent
4.A third of something is equal to ( ). A. two-fifths B. 33 percent C. five-tenths
5.His mother had thought it would be good for his character to _______ from home and earn some on his own.
A. run away B. take away C. keep away D.get away
(三) 預(yù)習(xí)：Reading and Vocabulary
(四) 作業(yè)：課本Page 42 Activity 2，4
2022年人教版高中英語必修一Unit 4《Earthquakes》（第4課時(shí)）word教案
