帮忙讲解三道时态题

题目

帮忙讲解三道时态题
2.He ______(sleep)since ten o'clock.It's timehe woke up.
1、I _____(teach) in this school for 10years.I_____(teach)hundred of students but I ____(never meet )a class like this.
2.He ___(hope)for a rise in salary for six months but he ____(not dare)to ask for it yet.
填空下,顺便帮我讲解下,要不我填了答案还是不理解那就没意义了.

答案

has been sleeping 完成进行时更好 强调动作的一个延续 但用has slept也可以 因为since决定了其完成时用法第二题第一空仍然与第一题一样 用have been teaching好于have taught 后两个空用 have taught 和 have never...