（1）你看起来很不高兴。发生什么事了？

  You look very unhappy. What you?

（2）快一点，飞机半个小时后就起飞了。

  Hurry up! The plane will in half an hour.

（3）她很高兴照顾那个小孩，因为她非常喜欢孩子。

  She look after the kid, because she likes kids very  much.

（4）在昨天的聚会上，Alice为客人们跳了舞。

  Alice the guests at the party yesterday.