1 That's it .通常表示說到了問題的關鍵處,說到了點子上,或表示贊同或肯定對方的話,意為“對了,就是這樣,問題就在這里”。
That's it . He doesn't study as hard as others. 問題就在這里,他學習不如別人努力。
“Is this the best way to do it?” “That's it .” “這是做那件事的最好方法嗎?”“正是。”
2 Is this it? 中的it是特指某個物件,意為“這是它嗎?”
“Where is my ruler?” “It this it ? ” “我的尺子在哪里?”“是這個嗎?”(it等于your ruler )
“Where is the dictionary?” “Is this it ? ” “詞典在哪里?”“是這本嗎?”(it等于the dictionary )