fromnowon(fromnowon，fromthenon分别用什么时态)

前者用一般将来时，后者可用过去时，也可用现在完成时，需根据语义表达而定

from now on用一般现在时或一般将来时；

from then on用一般过去时或现在完成时；

from now on

英 [frɔm nau ɔn] 美 [frʌm naʊ ɑn]

adv.从现在开始;从此;从今以后;往后

例句

1.From now on you are free.

从今以后你自由了。

2.We're going to have to economize from now on

从现在开始，我们不得不节约开支。

from then on

英 [frɔm ðen ɔn] 美 [frʌm ðɛn ɑn]

从此;从那时起

例句

1.From then on, they were taking no chances

从那时起，他们就不再冒险了。

2.From then on, mother and daughter have depended on each other for survival.

从此，母女俩相依为命