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英語動詞時態詳解：現在完成進行時

一、現在完成進行時的定義

現在完成進行時表示某動作從過去某個時間開始，一直延續到現在，并且還有可能持續下去。如：

Those cats have been screaming for hours. 那些貓叫了半天了。

We have been waiting for him for two hours. 我們等他等了兩個小時。

The dollar has been climbing steadily all week. 整個星期美元一直在穩步增值。

二、現在完成進行時的結構

 現在完成進行時由“have / has been + 現在分詞”構成。如：

Sales have been dropping off badly. 銷售量一直減少得很厲害。

I have been waiting for an hour and a half. 我一直等了一個半小時了。

We’ll have been living here for two years by next Sunday. 到下星期日，我們在這里就住了整兩年了。

三、現在完成進行時有哪些主要用法

1. 表示“持續”：

即表示一個從過去某時開始一直持續的動作，這動作可能剛剛停止，也可能還在進行。如：

She has been pruning the roses. 她一直在修剪玫瑰。

He’s been helping himself to my stationery. 他未經許可一直用我的文具。

The children have been having a lot of fun. 孩子們一直玩得很開心。

She is very tired. She’s been working all morning. 她很累。她干了一早晨了。

Tom has been seeing about a work permit for you. 湯姆一直在想辦法給你弄一個工作許可證。

The tobacco industry has been trying to improve its image. 煙草行業一直在試圖改善其形象。

It has come to our knowledge that you have been cheating the company. 據我們了解你一直欺騙公司。

The group has been living in a remote corner of the Cambodian jungle. 該部落一直居住在柬埔寨的叢林深處。

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