Question

求助几道高二英语题，求解释，谢谢了

1. Mary learned Chinese for about three years,___is，from 2002 to 2005.A.this B.that C. it D.which
2.We are told that he will come tonight.If so ,we will hold the meeting .if __,there won't be any meeting tomorrow. A.that B.not C.don't D.won't

Answer 1

1, that is 即, 相当于that is to say
2. B. “如果不”跟前面if so相对应。
if not 在此相当于If he will not come,省略了。

Answer 2

D
B

Answer 3

1.D,这是非限制性定语从句吧~
2.B,if not 是省略句~习惯性用法

Answer 4

1.B, 非限制性定语从句
2.B, if not 习惯性用法