keep 后面加名词、形容词、介词等。
例句
Im very sorry to keep you waiting.
对不起，让你久等了。
Lets keep in touch.
咱们保持联系。
We huddled together to keep warm.
我们挤在一起来保暖。
She forced herself to keep going.
她强迫自己坚持下去。
She managed to keep a poker face.
她设法不露出任何表情。
He failed to keep the appointment.
他未履约。
