1 . 对比句子完成表格。
They have been widening the road.他们在加宽马路。(尚未完成)
They have widened the road.他们加宽了马路。(已经完成)
Have you been meeting him recently?你最近一直见他吗？ (强调动作重复)
Have you met him recently?你最近见到过他吗？(表示结果)
Where have you been? We have been looking for you everywhere.你到哪里去了？我们到处在找你。(表示不满)
We have looked for him, but haven’t found him.我们找过他，但没有找到他。(无感情色彩)

	现在完成进行时	现在完成时
强调过去的动作对现在的影响或产生的结果
强调动作的延续性
强调动作重复
表达生动，含有感情色彩
说明一个事实、一种影响或结果

2 . 观察句子完成填空
1.He has been watching television all day.
2.I am tired. I have been painting the living room all the morning.
3.We have been discussing the matter several times this year.
4.His eyes ache. He has been sitting in front of the computer all the afternoon.
5.They have been building the bridge for two months.
6.He has not been working since he was fired three months ago.
1. 现在完成进行时态的构成：肯定形式：_________________ 。否定形式：_________________。
2. 现在完成进行时表示动作开始于过去，并__________到现在，动作可能__________，也可能__________。