什么是宾语从句?请举几个例子!

宾语从句
一 定义 :在复合句中起宾语作用的从句叫做宾语从句.
二 种类 :
1 由that引导的宾语从句－－－当从句是陈述句时,用that引导宾语从句．在口语和非正式文体中,that可以省略
I know ( that ) you like English .
He told me ( that ) he would go there next week .
2 由whether / if 引导的宾语从句－－－当从句是一般疑问句,选择疑问句或反意疑问句时,用whether / if引导宾语从句,并且要把疑问的语序变为陈述的语序．一般情况下,whether / if可以替换．但下面四种情况,只能用whether引导宾语从句．
He asked me whether / if I liked my job .
I want to know whether / if you'll come to the party .
(A)当句子中出现 or not 时,必须用whether引导宾语从句
I want to know whether or not youlike me .
I want to know whether you like me or not .
(B)当主句的谓语动词是由”动词＋介词”构成的短语时,必须用whether引导宾语从句
They're talking about whether they'll go there.
(C)当宾语从句为了起强调作用,放在句首时,必须用whether引导宾语从句
Whether you like me ,I want to know .
(D)当 if 容易引起歧义时,必须用whether引导宾语从句
Please let me know if youlike it .
(宾语从句 ,if =”是否”）
Please let me know if you like it .
（条件状语从句,if = ”如果”）
3 由特殊疑问词引导的宾语从句－－－当从句是特殊疑问句时,要用特殊疑问词引导宾语从句,并且要把疑问的语序变为陈述的语序．
He asked them why they hadn't finished their homework .
4 由形容词引导的宾语从句－－－ 当主句的谓语动词是由”be+形容词”构成的系表结构做谓语时,用形容词引导宾语从句
I am sorry ( that )I am late .
He is very glad ( that ) you'll help him .