1、 Unit 9 When was it invented？（第2课时）学习目标知识目标重点单词：bulb, microwave, taste, lemon, cookie, abacus, binoculars, century重点短语：alarm clock, light bulb, microwave oven, all day重点句型：(1) What do you think is the most helpful invention ? (2) I think it would be better to have (3 )Mum added salt but it still was
2、nt salty enough. （4）The abacus was invented in the sixth century.能力目标：学会用简单对话描述发明。情感目标：发明改变了世界，时代呼吁发明与创新。Step 1 Learn the new words on P70.At first, let students teach them themselves, then read to follow the tape until they can read them.Step 2 自主研学，理解新知一 写出下列各词的适当形式。1.operat(v.)_(n.)1. invent(v.)
3、_(n.) _(n.) 3.radio(n.) _(pl.)4.use(v.) _(adj.) _(n.) 5.thank(v.) _(adj.)6.annoy(v.) _(adj.) _(adj.)9.我想带一台收音机因为我你整天听音乐。 Id like to have a radio because I could _.Step 3 Check the students answers.Step 4 Go over the words and phrases.Step 5 3a PAIRWORKMake a list of five helpful inventions and five
4、annoying inventions.导学 1 helpful adj. 有益的 由名词help+ful构成 还有 use +fuluseful, thank+fulthankful, care+ful careful导学 2 listen to 与 hear 听 listen to 强调听的动作， hear 强调听的结果。导学 3 annoying 指物，令人感到烦； annoyed 指人，感到烦的。Step 6 3b PAIRWOR Discuss your opinions in 3a with your partners.导学 4 What do you think is the m
5、ost helpful invention? 你认为什么是最有用的发明？ do you think 作插入语，附加解释说明或总结，表示说话人的态度或看法。其结构为：疑问词+doyou think+疑问语序? Step 7 GROUPWORKImagine that you are alone on a tiny island. Choose five inventions you would like to have on the island with you.导学 5 I think it would be better to have 我认为带会更好。Would在此处表示“料想”或“猜想
6、，推测”，指说话人主观上认为不是很确定的可能性。后接动词原形或完成时。For example: I thought he would have told you all about it. 我想他应该把一切都告诉你了。Step 8 主动语态变被动语态的方法。（课件呈现）被动语态 语态是动词的一种形式，它表示主语和谓语的关系。语态有两种：主动语态和被动语态。如果主语是动作的执行者，或者是说动作是由主语完成的，要用主动语态；如果主语是动作的承受者，或者是说动作不是由主语而是由其他人完成的，则用被动语态。拓展:被动语态各时态构成表TENSE 主动语态 被动语态一般现在时 be+V.V.s amisa
7、re+V(p.p)一般将来时 willbe going to+V. will be +V(p.p)现在进行时 amisare+V.ing amisare+being+V(p.p)一般过去时 waswere was+v(p.p)were+V(p.p)现在完成时 havehas+V.p.p havehas+been+V(p.p)过去完成时 had+V.p.p had+been+V(p.p)过去进行时 waswere+V.ing waswere+being+V(p.p)情态动词 情态动词+V. 情态动词+be+V(p.p)感官动词或使役动词使用省略to的动词不定式，主动语态中不带to ，但变为被动语
8、态时，须加上to 。 例：make somebody do something somebody+ be +made to do something see somebody do something somebody +be +seen to do something1A girl saw my wallet drop when she passed by. My wallet was seen to drop by a girl when she passed by. 2The boss made the little boy do heavy work .The little boy w
9、as made to do heavy work by the boss.Step 9 常用的被动语态短语。（课件呈现）Step 10 水平能力形成性评价 ( ) 3. Pepper can be used _ our food more decilious. A.for making B.for keeping C.for to make D.for to keep ( ) 4.You should work hard at English because it is a _ language. A.helpful B.creative C.difficult D.fantastic二用所给
10、词的适当形式填空。5.MP4 is used for _ (play) music.6.He has two _ (radio).7.How many magazines can _ (borrow) from the library every week ?8.The _ (heat) ice cream scoop is very useful.三根据句以及首字母提示补全单词，完成句子。9.A_ doors are helpful for a modern person.10.The doctor was o_ on the eyes of the patient.11. I can see an i_ in the middle of the lake.12.Some l_ on the tree begin to turn yellow.教/学后记：
