① listen to意為“聽(tīng),傾聽(tīng)”。
They listened to the teacher attentively. 他們注意聽(tīng)老師講課。
② listen for意為“等著聽(tīng),期待聽(tīng)到”。
He listened for her knock at the door. 他期待聽(tīng)到她的敲門聲。
They listened for the clock to announce the new year. 他們等著聽(tīng)鐘聲迎新年。