我在外边一直等到海伦不得不上厕所.用英语怎么说？

我在外边一直等到海伦不得不上厕所.

I hung around until Helen had to go to the washroom.

hung

v. 悬( hang的过去式和过去分词 )，（被）绞死，贴，逗留；

例句
There were no shutters at the windows, and some of the doors hung askew.
窗户上没有百叶窗，有几扇门也歪歪扭扭的。

around

adv. 大约，旋转，到处，四处，在周围；prep. 围绕，在附近，前后，左右，在…周围；

例句
He has never put an arm around his wife to accommodate photographers...
他从未为了迎合摄影师而搂住妻子。

until

prep. 到…为止，在…以前；conj. 到…为止，在…以前，直到…才；

例句
The threat is likely to remain in abeyance until next year's meeting in Reykjavik.
这一威胁很可能会一直存在下去，直至明年的雷克雅未克会议。

Helen

n. 海伦（女子名，涵义：火把，光亮的）；

例句
Ben suffered a heart attack and Helen rushed to his assistance.
本心脏病犯了，海伦急忙赶过来帮忙。

had

v. 有（ have的过去式和过去分词 ），（亲属关系中）接受，拿，买到；

例句
He claimed that his parents had abandoned him...
他声称父母遗弃了他。

to

prep. 向，朝着，到，关于，属于；adv. 朝一个方向的，到某种状态，关闭；

例句
I suggest you leave it to an expert...
我建议你把它留给专家来解决。

go

vi. 走，离开，去做，进

例句
I would love to go abroad this year, perhaps to the South of France.
我今年很想出国，可能是去法国南部。

the

art. 指已提到的人（物），指说话人与听者已知的人（物），用于独一无二的事物前，与形容词最高级和序数词连用；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

washroom

n. 洗手间，厕所；

例句
It really puts me off a place when the washroom is dirty.
厕所很脏,令我对那个地方很反感.