"It" plague
it 瘟疫
错误句子
The rainy season is coming. It is too bad.
It 的用法
1：指代前面句子中的单数名词。
如果代词指代前面整个句子，必须用 this | that | which
应该修改为
The rainy season is coming. (This|That) is too bad.
注意 This | That 前面是句号
The rainy season is coming, which is too bad.
注意 Which 前是逗号，非限。
I won a lottery of 50 dollars. This is good.
I won a lottery of 50 dollars. That is good.
I won a lottery of 50 dollars, which is good.
