昙花一现的意思

现在完成时怎么造句？

1、I've never heard of anyone doing that。 我从未听说有人做那种事。2、l have played the piano 。我已经弹过钢琴了。3、Have you had lunch yet? -Yes,I have。 I've just had it。 你(已经)吃午饭了吗? 我刚刚吃过。(现在我不饿了) 4、He has taught here since 1981 。他自1981年就在这儿教书。(可能还要继续教) 5、I have't seen her for four years。 我有四年没见到她了。6、I have been to B...全部

  1、I've never heard of anyone doing that。 我从未听说有人做那种事。2、l have played the piano 。我已经弹过钢琴了。3、Have you had lunch yet? -Yes,I have。
   I've just had it。 你(已经)吃午饭了吗? 我刚刚吃过。(现在我不饿了) 4、He has taught here since 1981 。他自1981年就在这儿教书。(可能还要继续教) 5、I have't seen her for four years。
   我有四年没见到她了。6、I have been to Beijing twice。我去过北京二次。 7、We have already finished our homework。我们已完成作业了。
  8、They haven't finished their homework yet。他们还没有完成作业。 9、Have you ever been to the Great Wall?你曾经去过长城吗? 10、I have never been to the Great Wall。
  我从未去过长城。11、I have seen her before,but I can not remember where。 我以前见过她，但记不起在哪里见过。 12、He has been there three times the last few days。
   近几年他去过那里三次了。 13、Have you met him today?-No,I haven't。 今天你见过他吗?我 没有。14、How many times have you been there this year? 今年你去过那里多少次? 15、He has been a soldier for three years。
  他参军三年了。16、His father has been dead for two years。他父亲去世二年了。17、The film has been on for ten minutes。
  电影已开始十分钟了。 18、We have studied English for three years。 我们(开始)学英语已三年了。 19、I have lost my new book。
   我把新书丢了。(现在还未找到)20、He hasn't finished his homework yet。 他至今没有完成他的作业。21、The teacher says she has made lots of trouble in her class。
   老师说她在他们班制造了很多麻烦。22、They have got 5 prizes by the end of this year。 截止到今年年末他们已经获得5个奖项。23、I have finished my homeworkes。
   我完成了我的家庭作业。24、She has watered the flowers。 她已经浇了花。25、I have written the letter but I haven't posted it yet。
   信我已经写好了，但还没有寄出。26、He has waited for her for two hours。 他等她已经两个小时了。27、He has lived in Beijing for 8 years他在北京住了 8 年 。
  28、It has rained for five hours 雨已经下了5个小时了。29、I have reviewed two lessons this morning。 今天上午我已经复习了两课。
  30、I have had my lunch。我吃过我的午餐。31、You heaven't had any change ye。 你没有看到任何变化。32、He has read some books。
  他读过了许多书。33、She has ate her snake。她吃过了她的零食。34、They have saw that film。他们看过了那场电影。。35、He has lived here since 1978。
  自从1978年以来，他一直住在这儿。现在完成时是由助动词 have(has) 动词的过去分词构成。助动词说明该谓语是属于现在时范围。它和主语的人称、数要保持一致。过去分词是主要的谓语动词，说明句子的意义。
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