整理初中英语表语从句语法知识点
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初中英语表语从句思维导图模板大纲
表语是用来说明主语的身份、性质、品性、特征和状态
表语常由名词、代词、数词、动词过去分词、动词的-ing形式、副词、介词短语、形容词、不定式和从句等来充当
主语 + 系动词 + 引导词 + 简单句
What I want to say is that I am tired.
表语从句放在连系动词之后,充当复合句中的表语
可以接表语从句的系动词
be(being,been,am,is,are,was,were)
feel , seem , look, appear ,sound, taste , smell
stand , lie , remain ,keep, stay
become ,get , grow , turn ,go ,come, run,fall
prove, turn out
可以接表语从句的连接词
连接词:that / whether /as if /as though (if不引导表语从句)
that
that 在从句中不担任句子成分,无实际意义,一般不能省略
在表“建议,劝说,命令”的名词idea, suggestion, request, proposal 等后面的表从句中,谓语动词用“should + 动词原形”,should可省略
My opinion is that it’s getting better and better.
whether
whether在表语从句中表“是否”,但不充当句子的成分。if “不能”引导表语从句
What the doctor really doubts is whether my mother will recover from the serious disease soon.
as if, as though
as if/though引导的表语从句常置于连系动词look, seem, sound, be, become等后面,常用虚拟语气,表示不存在的动作或状态
It sounds as if/though somebody was knocking at the door.
主语+连系动词(look/seem/appear……)+that/as if从句
as if/as though引导的表语从句如果是事实,就用陈述语气
如果与事实不符,就用虚拟语气(主句一般现在时,从句就用过去式,be的话变成were 。主句是过去式,从句用过去完成时)。
Dark clouds are gathering. It looks as if it’s going to rain.
连接代词:who / whom / whose / which / what / whoever / whatever / whichever
连接副词:when / where / why / how / because
连接副词where, when, why, how除在句中起连接作用外,在从句中还充当时间、地点、方式、原因状语,本身具有词义
because
because引导表语从句通常只用于“This/That/It is because…”结构中
that, why 与because 引导表语从句时的区别
三者均可引导表语从句,但that没有词义,而why 和because 有自己的意思
why和because 都可引导表语从句,但前者强调结果,后者强调原因
名词主语+be+that从句
The fact is that I was in the garden when the robbery happened.
作主语的名词通常有表示事实、真理的名词fact, truth 或表示看法观点的名词idea, opinion, belief, view, feeling, suggestion, plan等
suggestion, proposal, advice, requirement 等词后的表语从句要用虚拟语气(should)do
名词主语+be+that引起的表语从句
The fact is that ____ the game.事实上我们队伍已经赢了
名词主语+be+wh-疑问词引导的从句
The trouble is where we can get the things we need
wh- 引导的主语从句+be+that 从句
This / That + be +wh-疑问词引导的从句
表语从句中的 that 不能省略;表语从句中只能用 whether 不能用 if;表语从句中,从句用陈述句语序
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