that is 后边能加句子吗比如 Currently,there is a widespread social epedemic,that is,the aging parents still serving as an ATM for thier grown-up children.这样说对吗?

that is 后边能加句子吗 that is 后边能加句子吗比如 Currently,there is a widespread social epedemic,that is,the aging parents still serving as an ATM for thier grown-up children.这样说对吗? than 后边加什么词性为什么 比如这个句子 连词后边必须加句子吗 为什么it is said 后边要加that what is it that 加从句,能给我造尽可能多的句子吗? it is a fact that +句子 that能去掉吗? it is that+句子 请问that能省略吗 前边讲了一个故事,后边用 so the well-known加一个大家都知道的名称.我知道这是“众所周知”的意思,但我想知道这符合语法吗?那是主语动词什么的.还有没有别的说法?比如 it is well-known that 加 that is...(也就是说..) 后面可以加句子吗? that day 后边加 was 还是 is?that day 的意思是这一天还是那一天? so...that...that后是不是必须加完整句子?比如the room is so big that can hold 100 people不对,是不是因为that后缺it? without doubt前边加句子还是后边加句子了? what is on the television?不是说特殊疑问句都是一般疑问句加特殊疑问词吗?这个句子怎么后边是短语啊. that 后面能跟it吗比如这个两个句子：They advocate that it will provide us with pleasure.It is believed that it is if great convenience for us to go to shopping.if 写错了，是of when 后边加ing的时候?什么时候?while 能加原型吗? 主语加谓语 能构成一个句子吗?比如 I find.是一个句子吗? c++中的类,比如CRect,这是一个类吗?定义一个类之后,后边加一个变量 比如：CRect