亚洲第一极品精品无码久久_无码国产色欲xxxx视频_国精品无码一区二区三区在线蜜臀_日韩av无码精品一二三区

兩種完成進(jìn)行時用法詳解

■現(xiàn)在完成進(jìn)行時的用法

(1) 基本用法：現(xiàn)在完成進(jìn)行時由“have / has been +現(xiàn)在分詞”構(gòu)成。它主要表示從過去某個時候開始一直延續(xù)到現(xiàn)在的動作，強(qiáng)調(diào)動作現(xiàn)在依然在進(jìn)行，并有可能繼續(xù)延續(xù)下去。如：

I’ve been waiting for an hour and he still hasn’t turned up. 我等了1小時了，可他還沒來。

I’ m so sorry I’ m late. Have you been waiting long? 真對不起，我遲到了。你等了很久了嗎?

現(xiàn)在完成進(jìn)行時常常用于抱怨。如：

This room stinks. Someone’s been smoking in here. 這間屋子空氣不好，有人在這兒抽煙了。

(2) 與現(xiàn)在完成時的比較：在表達(dá)一個從過去開始而現(xiàn)在仍在繼續(xù)或剛剛結(jié)束的動作時，某些動詞既可以用現(xiàn)在完成時，也可以用現(xiàn)在完成進(jìn)行時，如expect, hope, learn, lie, live, look, rain, sleep, sit, snow, stand, stay, study, teach, wait, want, work等。如：

你學(xué)習(xí)英語多久了?

正：How long have yon learnt English?

正：How long have you been learning English?

他已經(jīng)睡了十個小時了。

正：He has slept for ten hours.

正：He has been sleeping for ten hours.

■過去完成進(jìn)行時的用法

(1) 基本用法：過去完成進(jìn)行時由“had been +現(xiàn)在分詞構(gòu)成”，表示從過去某一時間開始一直延續(xù)到另外一個過去時間的動作，這個動作在當(dāng)時仍在進(jìn)行并可能繼續(xù)延續(xù)下去。如：

I woke up—l had been having a bad dream. 我醒了，我做了個噩夢。

She was very tired. She had been typing letters all day. 她很累了。她整天都在打信件。

Jenny was annoyed. Jim had been phoning her every night for a whole week. 詹妮生氣了。整整一星期，吉姆天天晚上都給她打電話。

(2) 與when連用：和過去完成時一樣，過去完成進(jìn)行時亦可后接具有“突然”意義的when從句(此從句用過去一般時)。如：

I had only been reading a few minutes when he came in. 我剛看了幾分鐘書他就進(jìn)來了。

(3) 一點(diǎn)說明：凡不能用于進(jìn)行時的動詞均不能有這種時態(tài)，但動詞want (有時還有wish) 除外。如：

The boy was delighted with his new knife. He had been wanting one for a long time. 男孩對新小刀很高興。他早就想要一把了。