有三个男孩在自行车上。

There are three boys on the bike.

我们有三个孩子——一个男孩和两个女孩。

We have three children - a boy and two girls.

三个男孩骑着山地车从我们身边经过。

Three boys went past us on mountain bikes.

那三个男孩同时回答。

The three boys answered all at once.

两个男孩首先要三个饼。

Two boys firstly asked for three cakes.

他曾企图诱拐那三个男孩。

He had attempted to abduct the three boys.

抱歉，这里有三个男孩一个女孩。

Sorry, three boys and a girl.

这三个男孩中，尼克最最聪明。

Of the three boys Nick is much the cleverest.

这三个男孩中，尼克最最聪明。

Of the three boys Nick is much the cleverest .

约翰在三个男孩中行为最有礼貌。

Of the three boys, John behaves(the)most politely.