精品偷拍一区二区三区,亚洲精品永久 码,亚洲综合日韩精品欧美国产,亚洲国产日韩a在线亚洲

  • <center id="usuqs"></center>
  • 
    
  • had been只是is的過去完成時(shí)么?怎么把 It had been a good day 改成疑問句?have been to 是不是固定搭

    had been只是is的過去完成時(shí)么?怎么把 It had been a good day 改成疑問句?have been to 是不是固定搭
    I have been to the US.意思是我去過美國.這句話是現(xiàn)在完成時(shí)態(tài),可是改成一般現(xiàn)在時(shí)就變成了 I is to the US.感覺好奇怪.
    I have been a good boy.意思是我曾經(jīng)是個(gè)好男孩,改成一般現(xiàn)在時(shí)是 I am a good boy.
    卻沒有問題.
    都是I have been 為什么一個(gè)可以改成現(xiàn)在時(shí),一個(gè)不可以?是have been to是固定用法 還是be to,或者2者都不是固定搭配!
    英語人氣:105 ℃時(shí)間:2019-10-17 08:36:49
    優(yōu)質(zhì)解答
    had been只是be[系動(dòng)詞是]的過去完成時(shí).It had been a good day 改成疑問句had it been a good day?
    have been to 是固定搭配,表示曾經(jīng)去過某地.【不能直接變成一般現(xiàn)在時(shí)態(tài)】
    我來回答
    類似推薦
    請使用1024x768 IE6.0或更高版本瀏覽器瀏覽本站點(diǎn),以保證最佳閱讀效果。本頁提供作業(yè)小助手,一起搜作業(yè)以及作業(yè)好幫手最新版!
    版權(quán)所有 CopyRight © 2012-2024 作業(yè)小助手 All Rights Reserved. 手機(jī)版