VOA慢速英语:Everyday Grammar - Simple Past and Present Perfect

短语讲解：

1. Now let’s talk about the present perfect.

talk about 讨论，谈论
例句：He went on to talk about his accident.
他接着谈到了他的意外事故。

2. Here’s a tip: pay close attention to adverbs.

pay attention to 注意
例句：Pay attention to uniting and working with comrades who differ with you.
注意团结那些和你意见不同的同志一起工作。

3.  Be careful of irregular verbs in the present perfect.

be careful of 小心，注意
例句：Drivers should be careful of pedestrians in town.
在城里，驾驶车辆的人应该注意行人。