1) He concluded not to come.
他决定不来了。
2) He decide not to buy them.
他决定不买了。
3) Perhaps he isn't coming.
他许不来了。
4) I can not decide.
我决定不了。
5) He seemed undecided.
他看来犹豫不决。
6) He promised not to come again.
他答应不再来了.
补充资料：他们
1.代词。称自己和对方以外的若干人。
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