sit up   (TTS發音)

1. move into a sitting position坐起身來

    Joe sat up when he heard the knock on his bedroom door. 喬聽到有人敲寢室的門，就坐起身來。

    She sat the old man up in bed. 她扶老人起來坐在床上。

2. stay awake instead of going to bed遲睡；熬夜

    Mrs. Jones will sit up until both of her daughters get home from the dance. 瓊斯夫人要等到她兩個女兒跳舞回來後再休息。

    I'll be late tonight. Don't sit up for me. 今晚我回來得遲，不要等我。

3. be surprised驚訝

    Janice really sat up when I told her the gossip about Tom. 當我把有關湯姆的流言蜚語告訴詹妮絲時，她確實很驚訝。

    You should have seen them all sit up as soon as I mentioned money. 你應該注意到，當我一提起錢的時候，他們個個都警覺了起來。