learning aims： 1．to master the use of the—ing form used as the object and the subject．2．to gather the use of the infinitive used as the object．learning contents: grammar 1．grammar 2learning difficult and important points:1．the use of the—ing form used as the object and the subject．2．the use of the infinitive used as the object．learning methods: make a thorough enquiry between ss-ss; ss- teacher; ss-alone.（三探一练四步学习法。）learning procedures：step 1．【课前预习】--【个人探究】1) ss read the following sentences and try to observe the underlined words． (1)pop art aimed to show ordinary twentieth ‘century city life．(2)instead，picture should attempt to show the ＂life＂ of its subject． (3)i can get tired of looking at pictures all the time． (4)my parents are fond of going to art galleries． (5)the artist finished drawing a horse in five minutes． (6)they succeeded in crossing the river．2) read the sentences and decide what the infinitive and the—ing form used as in each sentence． (1)pop art aimed to show ordinary city life． (2)i enjoy listening to classical music． (3)i get tired of looking at pictures all the time． (4)he doesn’t feel like eating. (5)to make an excuse is useless． (6)it is my pleasure to help you． (7)looking after those people is my job． (8)it is great fun sailing a boat. (9)to see is to believe． (10)seeing is believing．参考答案 (1)object (2)object (3)object (4)object (5)subject (6)subject (7)subject (8)subject (9)subject (10)subjectstep 2．grammar 1【课上探究】--【合作探究】1）．pair workchoose the following statements are true(t)or false(f)． (1)when verbal phrases are followed by a verb．the second verb must be the -ing form． (2)when verbal phrases are followed by a verb，the second verb must be the infinitive． (3)certain verbs can be followed by an infinitive．参考答案 (1)f(2)f(3)t2）．pair work (1)ask ss to finish activity 2 on p35．参考答案 ①the verbs that can be followed by the—ing form： like，enjoy，hate，dislike，love ②the verbs that can be followed by the infinitive： like，decide，hope，agree，hate，love，plan，refuse，aim，attempt，promise，learn (2)try to give a summary of the use of the—ing form and the infinitive form used as the object．______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________参考答案 ①v + doing：enjoy，admit，avoid，finish，keep，imagine，practise，suggest，can＂t help，mind，keep，etc． ②v + to do：decide，hope，agree，plan，refuse，aim，attempt，promise，learn，expect，afford，etc． ③v+ prep+ doing：put off，go on，give up，be good at，look forward to，be crazy about，succeed in，etc3）．pair workto finish activity 3 on p35．参考答案 (1)g (2)h (3)c (4)a／i (5)d／e (6)a／f (7)e／i (8)b (9)a／e4）．【全员探究】--教师点拨finish the table to get different meanings of the verbs that followed by the—ing form and the infinitive form． verbs v+ to do v+ doingremember，forget，regret go on，stop want，need，require try mean consider 参考答案 verbs v+ to do v+ doingremember，forget，regret 表示该去做的事不定式动作在后 表示曾经做过的事动名词动作在前 go on，stop 转到另外的事情上继续(或停止)原来在做的事情 want，need，require 表示主动含义 表示被动含义 try 尽力去做 尝试去做 mean 打算做…… 意味着…… consider 认为 考虑 step3:practice【当堂训练】 translate the following sentences： (1)我忘记已买这本书，因此又买了一本。 (2)别忘了给我买一台mp3。 (3)我记得把钱还他了。 (4)你要记得把钱还我啊! (5)没能帮上忙，我很遗憾。 (6)我很抱歉地告诉你，我不能跟你去那。 (7)尽管天下雨了，农民们仍在地里干活。 (8)他对新生表示欢迎，接着解释了校规。 (9)我们停止了谈话。 (10)我们停下来休息一下。参考答案 (1)i forgot buying the book，so i bought one more copy． (2)don’t forget to buy me an mp3． (3)i remembered paying him back the money． (4)please remember to pay the money back to me． (5)i regret being unable to help． (6)i regret to tell you that i can’t go there with you． (7)although it started to rain，the farmers went on working in the field． (8)he welcomed the new students and then went on to explain the school rules． (9)we stopped talking． (10)we stopped to have a rest．step4．grammar 2【合作探究】--小组合作1）．pair work finish activity 2 on p37．参考答案 (1)being able to (2)drinking (3)copying (4)drawing (5)helping (6)spending2）．【全员探究】--教师点拨 compare the differences between—ing form and to do form used as subject．参考答案 (1)动名词作主语时，表示一般的，抽象概念；而动词不定式作主语，表示具体的特定情景下或有待于完成的动作。如： ①to finish such a long novel will take me several days．(＂to finish such a long novel＂表示具体的、尚未完成的动作) ②swimming is good for health，but to swim in such a polluted river is harmful to health．(＂to swim in such a polluted river＂指特定情景下的动作) (2)当it为形式主语时，两者常可以互用。如： ①it’s difficult to make the air clean． ②it’s difficult making the air clean． (3)necessary，important等词后只用不定式。如： ①it is necessary to spend enough time on english if you want to learn it well． ②it is important to keep our classroom clean． (4)no use，no good，a waste of time后常用动名词。如： ①it is no use crying． ②it is no good cheating in the exams． ③it is a waste of time reading a silly book like this．step 5．homework finish the grammar exercises in the workbook on p85 86．