首先，books 是復數，那麽謂語動詞應該是are，即The books in the bag are kake's.意思是：包裏面的書是kake的；其次，若想表達：包上面的書是kake的，則為 The books on the bag are kake's.
2.There are five girl's names on the paper.
首先，翻譯成漢語是：紙上有五個女孩的名字。應該用名詞girl做定語，即 將girl's改為girl；其次，名字是寫在紙的上面的，應該用in，故正確的寫法是：There are five girl names in the paper.
3.We sang English songs and do same Chinese dance last night.
and前後應該連接兩個形式相同的詞，前面動詞過去式，那後面也應該用過去式did，正確的寫法是：We sang English songs and did same Chinese dance last night.