1.go + V-ing 去......

例句：It is fun to go traveling with people with the same interests.

与兴趣相同的人一起旅行是很好玩的。

2. all the time 始终，一直

例句：Fred can't wait for the day he retires; then, he'll play golf all the time.

弗雷德等不及退休的那一天;那时，他就可以天天打高尔夫球了。

3. no doubt 无疑地

例句：Jessica is so diligent (that) there's no doubt she'll be successful.

杰西卡非常勤奋，无疑地她将会成功。

4. the top of the mountain 山顶

例句：After climbing the mountain, I'll be exhausted, but soon I'll feel energetic again because of the fresh air at the top of the mountain.

爬完山后，我会精疲力竭，但是因为山顶上空气新鲜，我很快又会觉得精力充沛。