1、仪征市第三中学英语学科教案总 课 题 8B Unit 4 A good read 总课时 8 第 4 课时课 题 Grammar 课型 New教学目标学会正确使用“特殊疑问词+动词不定时”的结构不定式带 to和不带 to的用法学会正确使用 must和 have to教学重难点 情态动词的不同用法学法指导 情景教学法,归纳法. 教具准备 Blackboard; Multi-media教学步骤来源:学优高考网 二次备课一To-infintives 动词不定式动词不定式是一种非限定动词它有两种形式：带 to动不定式和不带 to的不定式。它在句中可充当主语、宾语、表语、宾语补足语、定语和状语等成分。1
2、) 主语 To dance is a lot of fun.=It is a lot of fun to dance.2) 表语 My dream is to be a teacher.Your job is to carry water to the garden.3) 宾语 I have decided to tell the truth to my parents.Did he choose to move house?常跟动词不定式做宾语的动词有：agree, want, like, hope, need, plan, begin, start, forget, remember, p
3、romise, prepare 等。4) 宾语补足语 Would you like me to stay here longer?Please help me (to) move this computer.动词 ask, tell, order, want, advise, invite, teach, encourage, remind等常跟 sb to do sth，带 to的动词不定式做宾语补足语。来源:gkstk.Com动词 let, make, see, hear, find, watch, feel等常跟 sb do sth，不带to的动词不定式 do sth作宾补.当两个或两个
4、以上动作并列作宾补时，后面的动词不带 to.来源:gkstk.ComHe asked the players to get up early and have 3-hour training every morning.5) 定语 I have a call to make this evening.The park is a nice place to go to.6) 状语 They went to Beijing to see a patient in hospital.(表目的)The man returned to find his home town greatly changed
5、.(表结果)二must 和 have to 用法用 must表示“必须”的意思时，通常着重于说话者的主观看法，认为有必要去做某事。而 have to（has to）着重于客观需要，含有“不得不”的意思。比较下列句子：We must study English hard.我们必须努力学习英语。You must be back on time.你们一定要按时回来。The children must go to bed before nine. 孩子们必须在九点前睡觉。You are ill today. You have to see a doctor. 你今天病了，不得不去看医生。My brot
6、her was very ill, so I _ call the doctor in the middle of the night. He said that they _ work hard. 2) have to有人称、数、时态的变化，而 must只有一种形式。He had to look after his sister yesterday.3）用于否定句时，must 的否定式是“决不可、禁止”的意思，而 have to的否定式（dont have to或 do not have to）是“不必”的意思。两者在意义上有较大的差异。若要表示“不必”这个意思，还可用 neednt。如：Y
7、ou must water the flowers, but you neednt do it at once. 你必须浇花，但不必马上浇。I dont have to (neednt) but a new bike. 我不必买新的自行车。You dont have to tell him about it. 你没有必要把此事告诉他。You mustnt tell him about it. 你一定不要把这件事告诉他4.) must还可表示“肯定、必定”等表猜测的意思，have to则没有这种用法。如：She is not here. She must go away.她不在这里，肯定走了。The bananas are black. They must be bad. 香蕉发黑，肯定坏了。 作业设计 1 完成课课练上本课时的作业2. 复习巩固 musthave to 的用法 教学反思
