1. The surrender of the soldier saved themselves from being killed.
I'm congratulate you on being happy .
其中的being 有什麼作用,可省略嗎,如省略了會影響意思?
2. which 作關係代名詞時,有時會在前加 in,at,on
有咩作用?
3.Susan was very fun to be around.
其中的to be有什麼作用,可省略嗎?
4.I'm ,I'd ,You'd在發音時有分別嗎?
為何我聽不出來?
可以的話詳細點解釋 Thx