现在完成时态复习课件.ppt

1、现在完成时态的复习现在完成时态的复习2019年12月一、现在完成时态的概念1、现在完成时态表示过去某个时间点开始发生的动作，一直持续到现在。2、现在完成时态表示过去发生的动作，对现在所造成的影响或结果。二、现在完成时态的结构have/has+过去分词助动词如：have/has worked have/has arrived have/has studied have/has done2019-46.()Your English teacher has never lost his temper,_ he?A)has B)hasnt C)did D)didnt2019-37.()Plastic

2、bags have caused serious environmental pollution,_?A)havent they B)have they C)dont they D)do they2019-67.Your mother has never tried shopping on the Internet.（改为反义疑问句）Your mother has never tried shopping on the Internet，_ _?AAhas she 三、现在完成时态三种基本的句子种类1、肯定句He has worked as a teacher for 3 years.2、否定

3、句He hasnt worked as a teacher for 3 years.3、一般疑问句Has he worked as a teacher for 3 years?We have had dinner.We havent had dinner.Have you had dinner?四、现在完成时态的用法（1）1、现在完成时态表示过去某个时间点开始发生的动作，一直持续到现在。2019He began to work as a teacher in 2019.He has worked as a teacher for 3 years.3 yearsNow he still work

4、s as a teacher.since2019forHe has worked as a teacher since 2019.A：How long has he worked as a teacher?He graduated from university.He has worked as a teacher since he graduated from university(in 2019).B：He began to work as a teacher.（自从。以来）（自从。以来）_用用How long提问提问BCHow long2019-41.()The Harry Potter

5、 books _ pretty popular since they were published.A)become B)will become C)have become D)are becoming2019-42.()Nancy _ lots of charity work in her free time since she entered college.A)has done B)will do C)was doing D)is doing2019-43.()Jenny _ with a Chinese family for two years.Now shes used to the

6、 life in China.A)stays B)would stay C)is staying D)has stayedAD2019-68.Mr Smith has taught in our school for three years.（对划线部分提问）（对划线部分提问）_ _ has Mr Smith taught in our school?2019-38.()_have you been in the sports club?Since the first month I came to the school.A)How old B)How long C)How much D)Ho

7、w soon四、现在完成时态的用法（2）2、现在完成时态表示过去发生的某一个动 作，对现在所造成的影响或结果。We have had dinner.Mike hasnt got to school.五、现在完成时态的一些注意点3、瞬间动词和延续性动词的转换2、have/has been to 和 have/has gone to 的区别1、already 和yet 的用法1、already 和yet 的用法We have already had dinner.We havent had dinner yet.Have you had dinner yet?（already用于肯定句中，一般置于

8、句中，助动词后。）（yet用于否定句和疑问句中，一般置于句尾。）2009-40.()I _ you already that washing hands often will help prevent the A-H1N1 Flu.A)tell B)told C)have told D)am tellingC2、have/has been to 和 have/has gone to 的用法 ShanghaiBeijingShanghaiBeijingThey have been to Beijing twice.他们去过北京两次。（已经从北京回来）They have gone to Beiji

9、ng.他们去北京了。（还没有从北京回来）2019-68.Mr and Mrs Brown have already been to China twice.（对划线部分提问）_ _ times have Mr and Mrs Brown been to China?How many2019-70.Junior 3 students began to learn chemistry a year ago.（保持句意基本不变）Junior 3 students _ learned chemistry _a year.3、瞬间动词和延续性动词的转换havefor常见的瞬间动词 延续性动词begin(began)to do buy(bought)borrow（borrowed）die(died)join(joined)leave(left)become(became)have/has donehave/has hadhave/has kepthave/has been deadhave/has been in/a/anhave/has been awayhave/has been a/an