What do you mean by “日本”in English?What's the meaning of the word?（這里的mean為什么這樣用）
There will be a friend coming here to see me tomorrow?(為什么是comeing,will后面不是原型嗎）
There were a large number of people collecting garbage.（為什么用ing）
I didn't hear the phone.I must be out.(為什么不用must have gone)
The hat which he is wearing is black.（可不可以用that,為什么)
He is the boy that bought a bike here.(為什么不用whom）
The man whom/who/that you saw just now is my English teacher.(為什么可以用whom/who/that 暈死）
I‘d like to talk with the man sitting next to me.（為什么ing?)