Have you already finished your homework？

　　 答案： Have you finished your homework yet？

　　 解析：现在完成时态中，肯定句中有already，变否定句或疑问句时通常要改为yet.

　　 例：我去过北京。

　　 I have gone to Beijing.

　　 答案：I have been to Beijing.

　　 解析："have been to+地点" 是表示曾去过某地，但此刻不在那儿(即在说话的地方)。而"have gone to+地点" 是表示去某地了，此刻在路上或已经到了那个地方(即不在说话的地方)。注意：这两个句式后接副词时，需省to.E.g. He has gone there.

　　 1 Have you ever ______(take) a train？

　　 2 It _________(be ) more than three years since Jim ______(leave) here.

　　 3 Have you _____(make)friends with your new classmates yet？

　　 4 I _______(have) my lunch and I'm not hungry now.

　　 5 Jim has never seen a panda， _____he？

　　 6 We ______(be) good friends since we met at school.

　　 7 We can't find him anywhere. Perhaps he______(go) home.

　　 8 He _____(read) the book before.

　　 9 Mr. Green _____(teach) us a lot about social studies since September.

　　 10 I _____never____ (meet) her sister before.

答案：

　　 1 taken　 2 has been， left　 3made　 4 have had　 5 has

　　 6 have been　 7 has gone　 8 has read　 9 has taught　 10 have met

　　 1 You have _____ a tall young man.

　　 A grown　 B grown　 into　 C grown us　 D grown up

　　 2 He has ____ the watch for a year.

　　 A buy　 B bought　 C have　 D had

　　 3 Has your brother _____ the dog？

　　 A kept in　 B fed　 C fed on　 D kept on

　　 4I _____this book for two weeks， I have to return it now.

　　 A borrowed　 B have　 borrowed　 C kept　 D have kept

　　 5 Have you ever _____to the Great Wall？ It's very beautiful.

　　 A gone　 B been　 C went　 D go

　　 6 Her brother _____the Party since 1978.

　　 A joined　 B has joined　 C has been in　 D was in

　　 7 The Greens _____many places of interest since they came to China.

　　 A will visit　 B visited　 C have visited　 D visit

　　 8 I'm sorry，I ____ your name.

　　 A had forgotten　 B forgot　 C have forgotten　 D forgotten

　　 9 The bookshop _____ for eight years.

　　 A has been open　 B has been opened　 Chas opened　 D has open

　　 10 We have____all the paper so we need to buy some.

　　 A used up　 B made of　 C filled with　 D hunted for

　　 11 The flower I ____grown up.

　　 A planted has　 B planted have　 C has planted　 D have planted

　　 答案：1B　 2 D　 3 B　 4 D　 5 B　 6 C　 7 C 8 C　 9 A　 10 A　 11 A

　　 例：She has left (离开) for 2 hours.

　　 答案：has been away

　　 解析：在肯定句中，与since或for引出的时间状语连用的是延续性动词，不能是短暂性动词,但在否定句中短暂性动词也是可以的。

　　 E.g. I haven't bought clothes for one year. 在此题中leave是短暂性动词，不能与for+时间段连用，须把它改成相应的延续性动词。如stop be over等。此题中leave要改成be away.这两种词的转换是学习现在完成时需要注意的。

专项练习：

　　 例：I has never heard (hear) of that before.

　　 答案：have heard

　　 解析：现在完成时与一般现在时一样也有单三人称的变化，当单三人称作主语时用 has， 一般人称作主语时用have.

　　 例：He taken (take) the medicine before.

　　 答案：has taken

　　 解析：have/has 为助动词,起构成时态的作用,是不能省略的。我们可以这样记:“现在完成时态中，have/has 不可缺。”

1、The students are singing in the room.(对划线部分提问)

　　 What are the students in the room？

　　 答案：What are the students doing in the room？

　　 解析：现在进行时态中对动作提问可记住此句式“What +be +主语+doing+其它？”

　　 或简写为“What……doing……”？句式。

　　 四 现在进行时态的选择疑问句中易忽视or后用现在分词形式

　　 例：孩子们在跑还是在跳？

　　 Are the children running or jump？

　　 答案：Are the children running or jumping？

　　 解析:or连接的是两个并列成分，动词形式须一致。

中考英语时态复习：现在完成时

　现在完成时表示：

　　 1)过去发生或已经完成的动作或存在的状态对现在造成的影响或结果。(即它的＂完成用法＂)

　　 e.g. I have just cleaned the classroom.

　　 2)过去已经开始，一直持续到现在的动作或状态。注意：此时动作可能还要继续。(即它的＂未完成用法＂)。

　　 E.g. He has lived in Beijing for ten years.其结构是“have/has+过去分词”。过去分词的变化分规则与不规则两种。规则变化与过去式相同，不规则变化需要另记。

　　 它的否定句是在have/has后边加not，变一般疑问句是把have/has提前。

　　 E.g. I have ridden a horse.　 I have not ridden a horse.　 Have you ridden a horse？

　　 它的时间状语通常为already，just，yet，ever，never，before等。另外还可和since+表过去的时间点，for+时间段连用。

　　 做题时常见错误如下：

2、Li Mingisn‘t read ( not read) a book in bed now.

　　 答案：1 are flying　 2 isn‘t reading

　　 解析：现在进行时肯定句的结构规律为:“be+现在分词，缺一不可”。这一点必须牢记。

三 对动词或动词词组提问时丢掉doing

　　 例：

1、 Look，two children flying.(fly) a kite in the park.