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基础语法第四期:现在完成时/现在完成进行时
http://edu.QQ.com   2005年06月02日 10:36   来源:沪江英语网   bluecat82
大家好,我是bluecat82。
希望能和大家一起交流学习,~~~~~这就开始了,今天继续第四讲!


今天的主题是:
1.Present perfect 现在完成时

请看下面的例句:
Tom is looking for his key. He can’t find it.He has lost his key. ‘He has lost his key’=he lost it and he still hasn’t got it.


现在完成时,用’have/has +过去分词’:

Where’s your key ? I don’t know. I’ve lost it.( I haven’t got it now)
‘Is Sally here ?’ ‘No, she’s gone out.’ .(she is out now)

一般情况下与以下词语连用:just, already, yet
Just= a short time ago
‘Would you like sth to eat ?’ ‘No, thanks. I’ve just had lunch.’
‘Hello.Have you just arrived ?

我们用already来表示一些比预期中提早发生的事情(to say that sth happened sooner than expected):
‘Don’t forget to post the letter, will you ?’

Yet= ‘until now’ 说话的人正在期待事情发生,yet只用在疑问句和否定句中:(shows that the speaker is expecting sth to happen.Use yet only in questions and negative sentences.)
Has it stopped raining yet ?
I’ve written the letter but I haven’t posted it yet.

2.Present perfect continuous 现在完成进行时

请看下面的例句:
Is it raining ? No, but the ground is wet. It has been raining.


我们用现在完成进行时表示最近停止或刚停止的动作(We use the present perfect continuous for an activity that has recently stopped or just stopped.):.
You’re out of breath. Have you been running ? (you’re out of breath now)
Paul is very tired. He’s been working very hard. (he’s tired now)
Why are your clothes so dirty ? What have you been doing ?
I’ve been talking to Carol about the problem and she thinks that …

It is raining now. It began raining two hours ago and it is still raining.
How long has it been raining ? It has been raining for two hours.

我们常这样用现在完成进行时,特别是和“how long,for,since” 这个动作可能仍然在进行(以上这个例子里)或刚刚停止。We often use the present perfect continuous in this way, especially with how long, for… and since…The activity is still happening(as in this example) or has just stopped.

听懂了?那么就来做些练习吧,不要紧张,很简单的。

第一题:填入正确的时态
arrive,break,go up,grow,improve .lose
1. Mike is looking for his key. He can’t find it.He_______________
2. Margaret can’t walk and her leg is in plaster.She_______________
3. Maria’s English wasn’t very good. Now it is much better._________________
4. Tim didn’t have a beard last month. Now he has a beard._____________________
5. This morning I was expecting a letter. Now I have it._________________
6. Last week the bus fare was 80 pence. Now it is 90.____________________

第二题:填入以下单词的正确形式
1. Joe goes out. Five minutes later, the phone rings and the caller says’ Would you like sth to eat ?’You say: No, thank you. I______________________(have lunch).
2. Maria_______________________(learn) English for two years.
3. Why _____________________(you/look) at me like that ? Stop it!
4. You are going to a restaurant this evening. You phone to reserve a table. Later your friend says ‘Shall I phone to reserve a table ?’ You say: No,_________________________it(do).
5. ‘Is Ann on holiday this week ?’ ‘No, she_____________________(work).’
6. Hello, Tom. I _____________________________(look) for you all morning. Where have you been ?


本期答案:
一:
1. He has lost his key.
2. She has broken her leg.
3. Her English has improved.
4. He has grown a beard.
5. The letter has arrived.
6. The bus fare has gone up.
二:
1. he’s just gone out.
2. has been learning
3. are you looking
4. I’ve already done
5. is working
6. have been looking
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