高中英语必修五 unit5 Grammar 省略PPT课件
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[语法初识]原句感知自主探究1.①First degree burns turn white when (theyare) pressed.②If burns are on arms or legs, keep them higher than the heart, if (it is) possible.2.①He is the man (who/whom/that) you can depend on.②There is no doubt that John's quick thinking and the first aid skills (that/which) he learned at school saved Ms Slade's life.3.The boy wanted to play football in the street, but his mother did not allow him to (play football in the street).4.It shows (that) a knowledge of first aid can make a real difference. (1)第1组例句为状语从句的省略。
当状语从句的主语和主句的主语指的是同一人或物,且由人称代词的主格担当,或当状语从句的主语为it,而且从句谓语中含有be动词时,可以把从句的主语和be动词一起省略。
(2)第2组例句为关系代词的省略。
当关系代词在限制性定语从句中作宾语时可以省略。
(3)例句3为不定式的省略。
有时可用不定式符号“to”来替代上文中出现的不定式。
(4)例句4为当及物动词之后跟由连接词that 引导的宾语从句时,that可以省略。
[语法剖析]为了避免重复,或为了使句子更简练,在一些句子中常常省去一个或某几个成分,这种语法现象在英语中叫省略。
在英语句子中,常见的省略情况有以下几种:语法点一状语从句中的省略1.在从句中,常省略跟主句相同的主语和系动词be或当从句的主语为it时,则从句中主语和be 动词常被省略。