PPT预览
1.由从属连词that引导的宾语从句
e.g.
1.I hear (that) he will be back in an hour.
2.He said (that) he missed us very much.
注: that 在句中无词汇意义，在从句中不能充当成分，在口语当中往往省略。
that在宾语从句中的省略与保留
a.在主+谓+it(形式宾语)+宾补+that从句(真正宾语)的句型中不省略.
eg: We must make it clear that we mean what we say.
b.由连词and连接的两个由that引导的宾语从句中,第二个that不省略.
eg: He told me ( that) he would come and that he would come on time.
c.当that作介词except, in等宾语时
e.g. They believe in that she must still be single.
I know nothing about him except that he is living in Beijing.
2.由从属连词whether, if引导的宾语从句
if/whether引导宾语从句表示“是否”
if/whether可互换，但whether...or not为固定搭配.
I want to know if/whether she is right.
They didn't know whether Tom could come back or not.
注意whether和if的使用区别
1).whether和if都可以引导宾语从句
a.当whether后紧跟or not时,不用if.
eg: I don't know whether or not he will come.
注意:如果or not放在whether所引导的从句句尾，则可以用if来替换。
I don't know whether/if he will come or not.
b.介词后面的宾语从句不能用if.
eg: I worry about whether I hurt her feeling.
