到达时请按门铃。

Please press the doorbell when you arrive.

Laura，有人在按门铃。

Laura, someone is ringing the doorbell.

她走上台阶按了按门铃。

She mounted the steps and pressed the bell.

有人在按门铃，会是谁呢？

Someone is ringing. Who might it be?

我们按门铃时，她假装不在家。

She pretended(that)she was not at home when we rang the bell.

他们按门铃，不过我没有去开门。

They did not serve me any papers. They rang the bell, but I did not open the door.

这个孩子在按门铃。

The boy is pressing the doorbell .

我按了按门铃。叮当！可没有人回答。

I rang the doorbell. Ding- dong ! No answer.

听！有人在按门铃。

Listen! Somebody is pressing the door ring.

他家的狗冲任何按门铃的人都要叫.

His dog always barks at anyone who rings the doorbell.