单句改错41April1stisadaywhichstrangethingsmayhappen.2I'llneverforgetthedayinwhichIwenttocollege.3Thenumberoftheworkersinhisfactoryareabout3,000.4Whenhewasyounghewasputintheprisonmanytimes.5Todaywehav

Question

单句改错4
1 April 1st is a day which strange things may happen.
2 I'll never forget the day in which I went to college.
3 The number of the workers in his factory are about 3,000.
4 When he was young he was put in the prison many times.
5 Today we have reached a stage which we are preparing for the marriage.
6 Nobody believes the reason why hw gave us.
7 He has two sons,one of them works as a teacher.

Answer 1

April 1st is a day on which(when) strange things may happen.
I'll never forget the day on which (when) I went to college.
The number of the workers in his factory IS about 3000 (主语是number)
When he was young he had been put into the prison many times.
Today we have reached a stage which we have been preparing for the marriage.
Nodody believes the reason that(which) he gave us.(reason 相当于give的直接宾语)
He has two sons,one of which works as a teacher.(或者在one前加and,英语中逗号前后的句子必须要有连词联系,否则就得用从句,which代指sons)