名词性从句里面各个连接词的区分
陈述语气
That +陈述语气（肯定语气）：
空气污染对气候有很大影响是明摆的事实。

真可惜我们不能去游泳.
特殊疑问词+ever
whoever, whatever, ……
无论谁触犯了法律都应该被惩罚。

疑问语气
Whether 和if
你是否接受她的邀请与我无关。

People are involving in a debate aboutwhether parent should parents make suggestions to teachers. 特殊疑问词
Who
谁泄漏了那个消息还不得而知。

where
我不知道要去哪里。

What
我也在质疑近来她都在做什么。

I am doubting what she is doing.
It is your heart that makes you noble.
What makes you noble is your heart.
我不知道要选择哪一个
How,
我不知道该怎么做
Why
1)为什么他走得那么匆忙是一个问题。

可以在后面加上疑问语气的同位从句的先行词有哪些？
Issue，problem，question，puzzle, debate，doubt
延伸：名词性从句省略主语的情况：
I don’t know what to do.
I don’t know what I can do.
条件是，从句里的主语和主句的主语是一样的。

非谓语动词作状语，当主干的主语与非谓语的主语一致，可以省略非谓语里面的主语，否则，应当在非谓语前面加上非谓语的主语。

Playing basketball，Mike is strong.
Weather permitting, I will go out for a picnic.
时间状语从句：主干的主语与非谓语的主语一致
While eating an apple, I was playing football.
事实上是对While I was eating an apple, I was playing football. 的省略。

同位语重句
阅读和听力部分在讨论什么导致和海龟数量锐减这个问题
修改以下的句子
People are involved in a heated debatewhethershould or not parents give advices to teachers when they find out the wrong parts about the teaching method
区分同位语从句（名词性从句）和定语从句。