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1、Section A Grammar Focus-4c,Objectives,To learn the present perfect tense with “already” and “yet”. To learn some new words: fiction, technology, French,Grammar Focus,用法： 1.表示过去发生或已经完成的某一动作对现在造 成的影响或结果。 e.g. Have you had your lunch yet? Yes, I have. Ive just had it. (现在我不饿了。) 2.表示动作或状态从过去某一时刻开始，一直延 续
2、到现在，而且可能还要继续下去。,现在完成时,e.g. I havent seen her these days. Ive known Bob for three years. Ive been at this school for over two years.,时间状语： already, yet, just, ever, never, before,构成： 现在完成时是由“助动词have / has+ 动词的过 去分词”构成的，规则动词的过去分词构成与 过去式相同，不规则动词的过去分词则需逐个 记忆。动词的过去式的变化和过去分词的变化 并不完全相同。我们对它们作了一个大致的分 类。,一、过
3、去式和过去分词的变化相同 规则变化： 1. 一般在动词词尾直接加ed。如： pick picked picked; wish wished wished; stay stayed stayed 2. 以不发音的e结尾的动词后面加d。如： like liked liked; hope hoped hoped; phone phoned phoned,3. 以“辅音字母 + y”结尾的动词，变y为i， 再加-ed。如： study studied studied; hurry hurried hurried; reply replied replied 4. 词尾只有一个辅音字母的重读闭音节动词，
4、 要双写辅音字母，再加-ed。如： stop stopped stopped; clap clapped clapped,不规则变化： 5. 以不变应万变。如： let let let; put put put; read read read 6. 若中间有双写e，则去掉一个e，单词末尾再加t。如： feel felt felt; keep kept kept; sleep slept slept,7. 末尾的字母d变t。如： lend lent lent; build built built; send sent sent 8. 变为以-ought或-aught结尾。如： buy bough
5、t bought; bring brought brought; catch caught caught; teach taught taught,句式 1. 肯定句：主语 + have / has + 过去分词 (+ 其他) 2. 否定句：主语 + have / has + not + 过去分词(+ 其他) 3. 一般疑问句：have/ has + 主语 + 过去分词(+ 其他) 4. 特殊疑问句： 特殊疑问词 (不是句子主语) + have / has + 主语+过去分 词 (+ 其他) 2) 特殊疑问词(是句子主语)+have / has+ 过去分词(+ 其他),already 意为“已
6、经”，常用于肯定句中。一般置于助动词have/has之后，过去分词之前，但也可放在句末。 e.g. 我已经看过这部电影了。 I have already seen the film. 我已经解决了这个问题。 I have already solved this problem. 我已经做完家庭作业了。 I have finished my homework already.,现在完成时-与already连用,yet，在现在完成时句型中常置于句末。 1) “已经”，常用在疑问句中。 e.g. 琳达已看过这本书了吗? Has Linda read the book yet? 你完成家庭作业了吗？
7、Have you finished your homework yet? 2) “还，仍然”，常用于否定句和疑问句。 e.g. 他还未开始工作。 He has not begun to work yet.,现在完成时-与yet连用,just 意为“刚刚”，常用于肯定句中。一般置于助动词have/has之后，过去分词之前。 e.g. 我刚吃过午饭。 I have just finished lunch. 我们刚刚听说她的婚讯。 We have just heard of her marriage.,现在完成时-与just连用,同学们要注意现在完成时与一般过去时的区别。虽然这两个时态都和过去发生的
8、事情有关，但是现在完成时强调这一动作与现在的关系，如对现在产生的结果、影响等，而一般过去时只表示过去的事实，不表示和现在的关系。如：,现在完成时与一般过去时,I went home at 10:00 yesterday. I have got home now. 我昨天十点回家的。现在我已经到家了。 I have already finished my homework. 我已经写完家庭作业了。 I finished my homework an hour ago. 我一个小时之前写完了家庭作业。,活学活用,1. Write the forms of the past tense and pa
9、st participle: drink _ _ see _ _ find _ _ leave _ _ tell _ _,drank drunk,saw seen,found found,left left,told told,2. Choose the right answer. Why is Mr. Yang still in the teachers office? Maybe he _ his work yet. A. doesnt finish B. hasnt finished C. havent finished,B,1. A: Would you like something
10、to drink? B: No, thanks. _. (just/drink some tea) 2. A: I heard you lost your key. _? (find) B: No, not yet. 3. A: Do you know when Tom is leaving? B:_. (already/leave),Use the words in brackets to complete the conversations.,Ive just drunk some tea,Have you found it yet,He has already left,4a,A: Wh
11、en _ ? (leave) B: This morning. 4. A: Is your sister going to the movies with us tonight? B: No. _ . (already/see the film) 5. A: What do your parents think about our plan? B: I _. (not/tell them/yet),did he leave,She has already seen the film,have not told them yet,Sally _ (love) reading. In the mo
12、rning, she reads the newspaper and in the evening she reads books. She _ already _ (read) more than 100 different books! Her favorite kind of books is science fiction. She is interested in science and technology and loves to imagine,Fill in the blanks with the correct forms of the words in brackets.
13、,loves,has read,4b,what the world_ (be) like in 50 years. She _ (finish) reading a book about robots last week and _(write) a book report about it next week for her French class. Every time she is in the library, Sally looks at the many books she _ (not read) yet and she cant wait to read them!,will
14、 be,finished,will write,has not read,Complete the chart with information about you and a friend.,A: What books have you already read? B: Ive already read Tom Sawyer and Harry Potter. A: What do you think of them? B: Well, I think Harry Potter was exciting, but Tom Sawyer was a bit boring.,4c,Pair Wo
15、rk,.单选。 1. Do you know the movie Lost in Thailand? Yes. I _ it twice. Its funny. A. saw B. see C. will see D. have seen 2. Lunch? No, thanks. I _. A. will eat B. am eating C. have eaten,D,C,Exercises,3. Our country _ a lot so far. Yes. I hope it will be even _. A. haschanged; well B.changed; good C.
16、 haschanged; better D.changed; better 4. What are you going to do this Sunday? I _ yet. A. wont decide B. didnt decide C. havent decided D. dont decide,C,C,6. I _the book Little Woman, but Ill let you read it first. A. havent read B. dont readC. wont read,5. Where are the flowers? You see, someone _ them to the window. A. movesB. has moved C. had moved D. would move,B,A,Excuse me. Have you _ (see) my dictionary? Have you _ (find) your wallet yet? I _ already _ (finish) my homework. Lets go out.
