A 表示一个动作在某一未来时刻之前开始并可能当时仍在进行:
At six I am bathing the baby.
6点钟,我将在给婴儿洗澡。(我在6点之前开始给他洗澡。)
它可以跟一个用一般现在时的动词连用,表示相同的意思:
They are flying over the desert when one of the engines fails.
他们飞越沙漠时,一个引擎出了故障。
现在进行时除了用于描述日常例行活动以及在生动的叙述中,一般很少这样用。但是,过去进行时常常这样同过去某一时刻或过去式连用。
B 与always连用:
He is always losing his keys.
他老是丢钥匙。
这种形式主要用于肯定式:
1 表示一种经常重复的动作,而这种动作常使说话人感到厌烦或觉得不合情理:
Tom is always going away for weekends.
汤姆每个周末总是外出。(现在进行时)
这表示他经常这样做,可能已使说话人感到过分频繁了。但这并不一定表示他每个周末必然外出,所以不能严格按字面来理解。试同always+一般现在时比较:
Tom always goes away at weekends.相当于:
Tom goes away at weekends.
汤姆每个周末都外出。(这句话可以照字面理解)
I/we+always+进行时也可以这样使用。这时这种经常重复的动作常常是偶然的而非故意的:
Im always making that mistake.
我常犯那错误。
2 表示一种看起来好像是连续不断的动作:
Hes always working.相当于:
He works the whole time.
他总是在工作。
这种用法常表示说话人对这个动作不耐烦,但不总是这样。如Hes always reading(他总是在看书)可指他在看书上花了过多的时间,但也可以是一种赞扬的口气。这个用法也可以用于第一人称。用于第一人称时,这种动作常是有意识的,与本节其他的动作一样。
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