英语四级语法基础知识之动词二

http://www.youth.cn  2013-08-07 00:00:00  中国青年网

  英语四级语法基础知识:

  在以as,than,when,if,unless等引导的从句中的省略:在有些状语从句中,如果谓语包含有动词be,主语又和主句的主语一致,或者主语是it,就常常可以把从句中的主语和谓语的一部分(特别是动词be)省略掉。

  Look out for cars when crossing the street.

  When taken according to the directions, the drug has no side effects.

  While there he joined in voluntary labour on a project.

  Although not yet six months old, she was able to walk without support.

  If not well managed, irrigation can be harmful.

  Though reduced in numbers, they gained in fighting capacity.

  This viewpoint, however understandable, is wrong.

  Enemies, once discovered, were tightly encircled and completely wiped out.

编辑:廖书曼 来源:新东方在线

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英语四级语法基础知识之动词二
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