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　　Period4 U1   Book 6 Grammar and usage  
　　Overview: infinitive, verb-ing and verb-ed
　　By Long Guanying from No.1 Middle School of Anren,Hunan
　　Teaching aims:
　　A.Get the students to review the forms of non-finite verbs
　　B.Get the students to summarise how to use them in different ways
　　C.Get the students to know the differences between different forms of non-finite verbs
　　Key points:
　　Get the students to tell the differences between different forms non-finite berbs
　　Difficult points:
　　Get the students to use the different forms of non-finite verbs correctly
　　Step 1.Different forms of non-finite verbs
　　非谓语动词是指在句子中不作谓语的动词，主要包括__________, _______, _________。
　　Step 2.Usages of non-finite verbs
　　Ⅰ作主语---先做练习
　　1._______________ is to believe. /  ______________ is believing. 眼见为实。
　　2. It’s no use _____________ over spilt milk. 覆水难收。(打翻牛奶，哭也没用)
　　3. It is impossible ___________________(完成任务)within such a short time.
　　4. It is very friendly of you_______________________________(邀请我们参加你的生日派对)
　　5. ____________(散步) is a good form of exercise for both young and old.
　　6. ___________________(怎样去那里) hasn’t been decided.
　　再归纳:
　　1 不定式作主语常表示具体的某一动作；   
　　动名词作主语表示泛指或一般的抽象概念
　　Swimming is exciting.  / To swim in Lu River is terrible.
　　2.单个不定式作主语时,谓语动词用单数;  若不定式太长,往往用it作形式主语,真正主语不定式短语整体后置
　　3. 复合结构: It is /was + adj.+ (for /of sb.) to do sth.
　　eg: It is important for us to learn English well.      
　　It is very kind of you to help me.
　　4. It is no use / no good / useless + doing sth
　　5.不定式可以和when / where /how /what /whether等连用，在句中作主语、宾语和表语
　　Ⅱ作定语---先做练习
　　1.He has no wish__________________(见她).
　　2.The power station ________________________明年修建的will be of great value to the people.
　　3.He is always the last __________________________ (离开公司).
　　4.The  temple_________________________(矗立山顶的） was built in the Ming Dynasty.
　　5. The question_______________________ (正被讨论的）is important.
　　6.Last autumn, I took many photos of leaves __________________________(落到地上的).
　　7.I don’t like to see the letter ______________________  (用铅笔写的).
　　再归纳：
　　1在序数词、形容词最高级the first， the last, the only 等修饰的名词后用动词不定式作定语。
　　2. 若作定语的不定式是不及物动词, 或者及物动词与被修饰的词不能构成动宾关系时,则不定式动词后须加上适当的介词。