亚洲欧美精品沙发,日韩在线精品视频,亚洲Av每日更新在线观看,亚洲国产另类一区在线5

<pre id="hdphd"></pre>

  • <div id="hdphd"><small id="hdphd"></small></div>
      16.3 混合條件句
      ?
        主句與從句的動(dòng)作發(fā)生在不同的時(shí)間,這時(shí)主,從句謂語動(dòng)詞的虛擬語氣形式因時(shí)間不同而不同,這叫做混合條件句。
         If you had asked him yesterday, you would know what to do now.
        (從句與過去事實(shí)相反,主句與現(xiàn)在事實(shí)相反。)
         If it had rained last night (過去), it would be very cold today (現(xiàn)在).














       學(xué)習(xí)啦--英語語法大全