居然的英文：
unexpectedly

It's inconceivable that she should do something like that.
她居然会做那样的事是令人难以相信的。

You are punctual for a wonder.
你居然准时到，真让人想不到。

(fml)For her to have survived such an ordeal was remarkable.
她居然能经得起这种磨难,真了不起.

It seems unbelievable that I have climbed so high in thirty—one years
我简直没法相信，经过三十一年，我居然晋升到这样崇高的地位。

He is a slacker, he actually skipped off and left us to do the clearing away.
他是个懒鬼，他居然悄悄地溜走而把清除工作留给我们来做。

God work wonders now and then; Behold,a lawyer an hone man.
上帝时或会制造一些奇迹；看啊，身为一名律师，居然还是老实人。

He's a slacker, he actually skipped off and left us to do the clearing away.
他是个懒鬼，他居然悄悄地溜走而把清除工作留给我们来做。

By some strange concurrence of favourable circumstances he had found out the drawing-room, and sitting there alone
真是机缘凑巧，他居然找着了客厅，她正好一个人在那儿坐着。

She was half sorry that her sagacity had miscarried, and half glad that Tom had stumbled into obedient conduct for once.
她一方面为了自己的机智落了空而难过，一方面又为了汤姆居然也有这么一回破天荒的听话守规矩的行为而高兴。

She was amazed/It amazed her that he was still alive
他居然还活

I finished work unexpectedly early.
我的工作出乎意料地提早做完。

I happened on him in the street unexpectedly.
我没想到会在大街上碰见他。

The invasion was held up by unexpectedly stout resistance.
入侵行动因遭遇到了出乎意料的顽强抵抗而受阻。

The desire to be a mother may creep up on you unexpectedly.
你会不知不觉地产生想当母亲的渴望。

Attack,discover,etc(sb)suddenly and unexpectedly
突然而出人意料地攻击、发现...(某人)