2017年中考英语复习:必考句型(11)

编辑: 路逍遥 关键词: 中考复习 来源: 逍遥右脑记忆


28. It takes sb. some time to do sth. 花费某人多少时间做某事
  it是形式主语,真正的主语是动词不定式to do sth。例如:
  It takes her fifteen minutes to walk to the bus stop from here.
  从这儿走着到公交车站将花费她15分钟。
  It took the old man three days to finish the work.
  那个老人花了三天时间完成这项工作。
  29. keep (on) doing sth. 一直坚持做某事
  keep doing sth.一般用于静态动词。keep on doing sth.意为“继续不停地做某事”,一般用于动态动词,但二者的区别并不是很严格,有时可以互换。例如:
  Don’t keep on doing such foolish things.
  不要再做这样的傻事了。
  He kept sitting there all day.
  他整天坐在那里。
  30. keep…from doing sth. 阻止......做某事
  相当于stop…from doing sth., prevent…from doing sth. 在主动句中,stop和prevent后面的from可以省略,但在被动结构中,from不可以省略。例如:
  Please keep the children from swimming in the sea.
  请别让孩子到海里游泳。
  The big noise outside my room stopped me from doing my homework.
  屋外巨大的噪音使我不能做作业。
本文来自:逍遥右脑记忆 http://www.jiyifa.net/zhongkao/825605.html

相关阅读:上海中考数学命题陷阱大集合