1,does he have to practice speaking english every day.为什么spe

2个回答

  • 1.practice 后必须跟动名词作宾语.

    2.by 在……之前.用at来表示在某一时刻,at 4∶30在4点30分;

    by a time=at that time or before/not later than that time

    在那一时刻或在那一日期或不迟于那一日期

    这种表示方法常暗指在那一时刻之前

    The train starts at 6∶10,so you had better be at the station by 6∶10.

    火车6点10分发车,所以你最好在6点10分之前到达火车站.

    3.have fun doing sth.:做某事很开心 = have a good time doing sth.= enjoy

    doing sth.