“There has been great changes in computers in the last few year”
“There has been great changes in computers in the last few year”
為什么是 has been不是have had
為什么是 has been不是have had
英語人氣：916 ℃時間：2020-05-22 20:15:58
優(yōu)質(zhì)解答
是There be 結(jié)構(gòu)的現(xiàn)在完成時.一般時態(tài)情況下是：There is great changes in computers.在計(jì)算機(jī)領(lǐng)域有很大變化.而加上了in the last few years,表示在過去的幾年里已經(jīng)發(fā)生了很大變化,需要用現(xiàn)在完成時,所以變成了there has been...
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