四、课堂运用
【基础】 1. Both his parents look sad . Maybe they _________what's happened to him . Ａ. knew Ｂ. have known Ｃ. must know Ｄ.will know
2. He has _______ been to Shanghai , has he ?
Ａ. already Ｂ.never Ｃ.ever Ｄ. Still
3. Have you met Mr Li ______?
Ａ. just Ｂ. ago Ｃ.before Ｄ. a moment ago
答案及解析：
1、现在完成时主要强调过去发生的动作对现在造成的影响，或过去发生的动作还未结束，一直持续到现在或将来，重点在于对现在的影响。这种考查难度较大，往往无时间状语，需要从上下文分析、推理才行。故上两侧根据上下文分析、推理，正确答案是Ｂ。
2、现在完成时常与already（已经），just（刚刚，正好），ever（曾经），never（从来，也不；从不），before（以前），yet（仍然）等连用。故2应选B。
3、C
【巩固】
1. The famous writer _____ one new book in the past two year
Ａ. is writing Ｂ.was writing Ｃ.wrote Ｄ.has written
2. -Our country ______ a lot so far . -Yes . I hope it will be even ______ . Ａ. has changed ; well Ｂ. changed ; good
Ｃ. has changed ; better Ｄ. changed ; better
3. Zhao Lan ______already ______in this school for two years .
Ａ. was ; studying Ｂ. will ; study Ｃ. has ; studied Ｄ. are ; studying
答案及解析：
1、现在完成时常与recently（近来），so far（到目前为止），in the past/"last + 一段时间"等时间状语连用。因为上述短语表示的是从现在起往前推算的一段时间，句中的动作是从过去某一时间或时刻开始持续到现在的。故2应选D。
2、C
3、现在完成时时常与"for +时间段或since +过去时间点"连用（含从句，从句过去时）。故3应选C。
【拔高】 1. We ______ Xiao Li since she was a little girl .
Ａ. know Ｂ. had known Ｃ. have known Ｄ. knew
2. Harry Potter is a very nice film .I_______ it twice .
Ａ. will see Ｂ. have seen Ｃ. saw Ｄ.see
3. -These farmers have been to the United States .
-Really ? When _____ there ?
Ａ. will they go Ｂ. did they go
Ｃ. do they go Ｄ. have they gone
答案及解析：
1、C
2、现在完成时还与once（一次），twice（两次），three times（三次），several times（几次）等表示重复次数的词语连用。故2应选B。
3、现在完成时与一般过去时容易混淆，就是因为它们所表示的动作都发生在过去，但二者又有区别：一般过去时表示过去某个时间发生的事、存在的状态或经常发生的动作，说话的侧重点在于陈述一件过去的事情，与现在没有关系；现在完成时表示与现在有关系的发生在过去的动作，它不与表示过去的时间状语（如yesterday , last week ,
a moment ago等）连用。故3的正确答案为B。）
课程小结
1. 现在完成时的定义
2. 现在完成时里表示一段时间的延续性动词以及连续性动词的用法
3. 现在完成时和一般过去时对比和总结
课后作业
【基础】
1. -______ you ___ your homework yet ?
-Yes . I _____ it a moment ago .
Ａ. Did ; do ; finished Ｂ. Have ; done ; finished
Ｃ. Have ; done ; have finished Ｄ. will ; do ; finish
2. His father ______ the Party since 1978 .
Ａ. joined Ｂ. has joined Ｃ. was in Ｄ. has been in
3. -Do you know him well ?
Sure .We _________ friends since ten years ago .
Ａ. were Ｂ. have been Ｃ. have become Ｄ. have made
答案及解析：
1、B
2、现在完成时中，非延续性动词不能与for和since引导的表示一段时间的状语连用，通常是用相应的延续性动词来代替。故11的正确答案依次为：D。
3.B
【巩固】
1. -How long have you ____ here ?
-About two months .
Ａ. been Ｂ. gone Ｃ. come Ｄ. arrived
2. Hurry up! The play __________ for ten minutes .
Ａ. has begun Ｂ. had begun Ｃ. has been onＤ. Began
3. It _____ ten years since he left the army .
Ａ. is Ｂ. has Ｃ. will Ｄ. Was
答案及解析：
1、A 2、C 3、A。
【拔高】
1. Miss Green isn't in the office . she_______ to the library .
Ａ.has gone Ｂ. went Ｃ.will go Ｄ. has been
2. My parents ______ Shandong for ten years .
Ａ. have been in Ｂ. have been to
Ｃ. have gone to Ｄ. have been
3. The students have cleaned the classroom, __________?
A. so they B. don't they C. have they D. haven't they
答案及解析：
1、"have/has gone to + 地点"表示"某人去了某地（还未回来）"，指主语所指的人不在这儿。"have/has been in + 地点"表示"在某地呆了多长时间"，常与表示时间的状语连用。"have/has been to +地点"表示"曾经去过某地（但现在已不在那儿）。"故16的正确答案为A。
2、A
3、D
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