Section Ⅳ　Grammar & Writing

现在完成进行时

　　阅读下列句子，体会黑体部分的用法

　　1．In 1996, I moved to Canada with my husband and I have been living there since then.

　　2．Liu Fang has been playing pipa for the last three hours.

　　3．She's been performing concerts every day since last month.

　　4．I have been reading the book.

　　5．I have traveled to most of the cities in China since five years ago.

　　一、现在完成进行时的用法

　　1．持续性用法

　　即表示一个从过去某时开始一直持续的动作，这动作可能刚刚停止，也可能还在进行。这种时态常和all the time，this week，this month，all day，all morning，these days，recently等时间状语连用，还常与since或for构成的时间状语连用。

　　What's the matter with you？I have been waiting for you for 3 hours.

　　你怎么回事？我已经等了你3个小时了。

　　She is very tired.She has been working all morning.

　　她很累。她工作了一早晨了。

　　The tower has been standing there since the Tang Dynasty.

　　这座塔自从唐代以来就一直耸立在那里。

　　2．重复性用法

　　即表示在一段持续的时间内动作的多次重复，而这个重复的动作在说话时并不一定在进行。

He has been writing articles to the newspapers and magazines since he became a teacher.