SectionⅢGrammar—表语从句和主语从句语法图解探究发现①Myfeelingisthatthey'regoingtobebigoneday
②ButthebigsurpriseoftheeveningwaswhenIwaselectedpromqueen
③Chinaisnolongerwhatitusedtobe
④ThereasonwhyI'mcallingyouisthatIwanttoinviteyoutomybirthdayparty
⑤Thatshehasbecameanartistmayhavebeenduetoherfather'sinfluence
⑥Whatweshoulddonextremainsunknown
⑦Whetheritwilldousharmremainstobeseen
⑧It'sagoodthingthattheexamsarefinished
[我的发现](1)以上句中,①~④句中黑体部分均引导表语从句,而⑤~⑧句中黑体部分则引导主语从句
(2)由④句可知,主语为名词reason时,表语从句中的连接词要用that,而不用why
(3)由⑤⑥句知,引导主语从句时,what要在从句中充当句子成分,而that不作任何成分,只在语法上起连接作用
(4)⑧句中,it用作形式主语,代替that引导的主语从句
一、表语从句1.定义在复合句中作表语的从句,叫作表语从句
它位于主句的系动词之后,对主语进行解释、说明,使主语的内容具体化
2.引导词引导词用法例句从that,在从句中不作成ThetroubleisthatIhave属连词whether(不能用if)分,that没有实际意义,不可省略;whether意为“是否”losthisaddress
麻烦是我把他的地址丢了
Thepointatis