now

n U 此刻，现在

• Now is the time to tell them the truth. 现在是告诉他们真相的时候了。

词组before now 以往，以前

• I have heard about it before now. 我以前已经听过这件事。

by now 到现在，此时

• He should have arrived by now. 此时他已该到了。

for now 现在，目前

• That will do for now; we'll finish the job another time. 眼下就这样吧，下回我们把它干完。

from now on 从现在起

• I will work hard from now on. 今后我要努力工作。

up to(或till, until) now 到目前为止

• I have heard nothing from him up to now. 到目前为止，我没有得到一点音信。