english

forklift update: Referring to a complete system replacement,以前替换一个系统要用叉车运来一堆机器。

现在完成进行时表示过去发生，说话时动作刚刚结束或还要进行下去，强调“已经一直”

现在完成时表示过去已经发生并且结束，对现在的影响，强调“已经”，比如他已经连续八次主持表演了。(host the show eight times)

现在进行时表明现在正在发生，强调“正在”，比如雪已经下了三个小时了( It has been snowing for three hours), 现在正在下雪( It is snowing now)

 

By the age of then, By the time John Hery was a young man,

By(prep): 1. before(在...以前）, 2. not later than(不迟于) some particular time.

by 1999, xxx will xxx.

by now: until to now, 到现在为止(跟完成时态)， = so far, I have done half of work by now(so far),经常用在should have xxx 句式里。如果不是怎样，我现在已经到哪了。 也可跟现在时态，那就= now 了。

at the time = at that time = 当时，那时   I was in London at the time.

 

called loudly, shout, yell, scream(前面三个都是有意识的大声，scream是无意识的发出尖叫）

 

a few/some/many: a few: about 3-5; some: 5-8 or more than a couple; many: above; all; a few 用在肯定语气里，有几个，few用在否定语气里，没几个