now

名词 now:

1. the momentary present

副词 now:

1. at the present moment
   同义词：at present
2. in these times
   同义词：nowadays, today
3. in the historical present; at this point in the narration of a series of past events
4. (prefatory or transitional) indicates a change of subject or activity
5. used to preface a command or reproof or request
6. without delay or hesitation; with no time intervening
   同义词：immediately, instantly, straightaway, straight off, directly, right away, at once, forthwith, in real time, like a shot
7. in the immediate past

1. It is now possible to put a man on the moon.
   目前已能将人送到月球上。
2. He is writing a letter now.
   他现在正在写信。
3. He was at home just now.
   他刚才在家。

now

adv.（副词）
At the present time:
现在：
例句：
goods now on sale; the now aging dictator.
现售货物；现在正在衰老下去的独裁者

At once; immediately:
立刻；立即：
例句：
Stop now.
立即停止

In the immediate past; very recently:
刚刚；最近：
例句：
left the room just now.
刚离开房间

At this point in the series of events; then:
在一系列事件的一点；那时：
例句：
The ship was now listing to port.
船当时正向港口开进

Nowadays.
如今
In these circumstances; as things are:
在这些情况中；正如事情是：
例句：
Now we won`t be able to stay.
这种情况下我们不能留下了

Used to introduce a command, reproof, or request:
用来引出命令、谴责或要求：
例句：
Now pay attention.
现在注意了

Used to indicate a change of subject or to preface a remark:
用来表示主语的变化或作为标记：
例句：
Now, let`s get down to work.
现在，让我们埋头工作吧!

conj.（连接词）
Seeing that; since:
因为；既然：
例句：
Now that spring is here, we can expect milder weather.
现在春天来了，我们可以期望较温和的天气

n.（名词）
The present time or moment:
此刻，现时：
例句：
wouldn`t work up to now.
到现在都不肯工作

adj.（形容词）
Of the present time; current:
现在的；时下的：
例句：
our now governor.
我们现金的州长

Slang Currently fashionable; trendy:
【俚语】 现今时髦的；倾向的：
例句：
the now sound of this new rock band.
这支新摇滚乐队的流行乐曲

<习惯用语>now and again 或
now and then
Occasionally.
偶尔地
来源：
Middle English
中古英语
from Old English nô * see nu-
源自 古英语 nô *参见 nu-

【引伸】
now.ness
n.（名词）