has bought 与has had

来源：学生作业帮编辑：搜搜考试网作业帮分类：英语作业时间：2024/07/06 21:06:35

has bought 与has had
能否说My family has bought two aircleaners since the hazy weather was broadcast.
话说since +时间点不等于时间段吗,为什么老师说能用has bought ==话说我选了Bought

是时间段,但它有一个参照时间--现在,即它是指自..以来（到现在),表到现在已经完成的动作,要用现在完成时态,即have/has+过去分词.
再问：那么buy没有延续性词啊，只有has had
hasbought 是不是错误用法
再答：完成时态表示的是已经完成的动作，不一定是持续的动作。如果用于完成进行时态表持续的动作则不行。
since表时间段，指的是"自……以来"，但并不指动作持续那么长时间，如果用for后面加时间段则表动作持续时间，意为"持续/计/达……（时间"），如：
he has been away for two hours.他已经走了（离开）有两个小时了。但却不能说he has gone for two hours.因为go没有延续性，不能和for two hours连用.

has bought 与has had has bought和has had的区别 he has had breakfast .has 与had she it for about two years.A bought B has bought C has had how lond has he ()[lent,borrowed,had,bought] the dictionary he has had the book for two days/he has bought the book for how long ______she________the bike?A has,had B has,bought C has/had been 跟has/had gone 求教一道英语选择题1.He bought a bike last year.He has had the bike () He ________ the computer for half a year. A.has bought B.had has,have,had用法 have、had、has的区别与用法是什么?