打保票
Vouch for somebody.

【发音】dǎ bǎo piào

【释义】对某种结果事先作出保证。 
            Guarantee something before the result.

【例1】我敢打保票，他不是干那种事的人。
           I guarantee that he is not the type of person who would do such a thing.

【例2】我敢打保票， 我的消息很可靠。
           I can vouch for the accuracy of my information.

凑热闹
Join in the fun.

【发音】còu rè nào

【释义】1. 参加进去一起热闹。
                Take part in the merriment. 
            2. 添麻烦；添乱。
                Give someone more trouble.

【例1】我来唱支歌， 凑凑热闹。
           Let me sing a song to add to the fun.

【例2】我已经够烦了，别再凑热闹。
           I’m annoyed enough as it is; don’t give me any more trouble.

出洋相
Making a laughingstock of oneself.

【发音】chū yáng xiàng

【释义】（言语、动作等）表现得滑稽有趣；闹出被人耻笑的事来。
             Words or deeds seem ridiculous and funny; make a fool of oneself.

【例1】在会上我出了洋相。
            I make a fool of myself at the meeting.

【例2】那女人又踢又叫，出尽了洋相。
           The woman’s kicks and screams made a disgraceful performance.

出风头
Seek (or be in) the limelight.

【发音】chū fēng tóu

【释义】出头露面表现自己，以引起众人的注目；也指显露锋芒，展示才华。
            This phrase describes someone likes showing off himself so as to catch others’ attention. It also means that one is bravery to show his or her talents before the public.

【例1】她就喜欢抢镜头，出风头。
           She loves to steal the show and be the centre of attention.

【例2】他们从来不出风头。
           They never push themselves forward.

出点子
Offer advice.

【发音】chū diǎn zǐ

【释义】想办法；出主意。
            Think of solutions; make suggestions.

【例1】大家一起出点子，或许能想出办法。
           Let’s brain-storm about it, and we may work out a solution.

【例2】我可以给他出一两个点子。
           I can give him a pointer or two.