1) I could not get up to him.
我追不上他。
2) I couldn't catch up with him.
我撵不上他。
3) Don't run after him.
不要追他。
4) He will make a pass at my sister.
他要追求我姐姐。
5) I'm not as good as he is.; I can't compare with him.
我不如他。
6) I go at once; otherwise I shall have missed him.
我马上去了;不然我会想念他。
补充资料：不要
1.表示禁止和劝阻。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条