You say listen when you want someone to pay attention to you because you are going to say something important.
Listen, I finish at one.
听着,我一点钟完事。
listen in
If you listen in to a private conversation, you secretly listen to it.
eavesdrop
He assigned federal agents to listen in on Martin Luther King's phone calls.
他派联邦特工去窃听马丁·路德·金的电话。
listens , listening , listened
If you listen to someone who is talking or to a sound, you give your attention to them or it.
He spent his time listening to the radio.
他把时间花在了听收音机上。
If you listen for a sound, you keep alert and are ready to hear it if it occurs.
We listen for footsteps approaching.
我们侧耳倾听有没有脚步声靠近。
If you listen to someone, you do what they advise you to do, or you believe them.
Anne, you need to listen to me this time.
安妮,这次你要听我的。