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- Can not you be serious for once? 你就不能严肃一点吗？
- Can't you serious for once? 你就不能严肃点吗?
- It made a refreshing change to be taken seriously for once. 总算有一次受到认真对待，这变化真是令人耳目一新。
- Can' t you extend your visit for a few days ? 你们访问的时间不能延长几天吗?
- Can't you be serious for once? 你就不能严肃点吗?
- It wouldn't hurt (you) to say sorry for once. 说一声对不起(於你)没有什麽不好。
- Are you serious? Can I come this Xmas holiday? 我在蒙特利尔;如你有机会来;可以住在我家.
- Can' t you tell vice from virtue ? 难道你不能辨别善恶吗?
- Stop jesting and be serious for a moment! 别开玩笑了，严肃一会儿吧！
- Can' t you think up a better excuse than that ? 难道你想不出比这个藉口更像样的了吗?
- Don' t be angry. Can' t you take a joke ? 别生气，难道你经不起开玩笑吗?
- The job is up for grabs. Why don' t you apply now ? 那工作谁都可以争取.;你怎麽不现在就申请呢?
- Just for once he arrived on time. 只有这次他是按时到了。
- Don' t just stand by. Can' t you lend a hand ? 别站在一边旁观，你不能帮一下忙吗?
- Can' t you borrow some jewellery from a friend ? 可不可以向你的朋友借点首饰呢?
- Come on, it's your birthday; why don't you let yourself go for once? 来，今天是你的生日，为什么不去高兴一番？
- For once he was telling the truth. 他只有这一次说了实话。
- Can' t you sort the good from the bad ? 你难道不会区分好坏吗?
- My infant for once lay quiet in his cradle. 我的婴儿这一次总算安静地躺在摇篮里。
- B:Relly? Can’t you stay a bit longer? 真的要走？不能再多呆一会儿吗？
