1.你和我都不对.

Neither you nor I am right.

2.不要担心他,他回和同学处好关系的.

Don't worry about him. He will get along with his fellow students.

3.你在过马路之前要两边看看.

Look around when you are crossing the street.

4.我的哥哥对唱歌很感兴趣

My brother is interested is singing.