Mistake 介係詞

1. I correct my mistakes on the workbook.
There are some mistakes in your homework.
介係詞in/on在這邊的解釋為何呢?
2.Joe's mom will be happier if he doesn't break the bowls again.
這句話是屬於直述句嗎?它的邏輯又是什麼呢?
更新: 感謝兩位大師的解惑,另外還有一題想要請教
When I walked into the bedroom, I saw my sister crying.
請問when可以用after代替嗎? (在我走進房間之後,我看見我的妹妹在哭)
3 個解答 3