建议你用的句子：
Could you please rephrase that question/topic?
Im not exactly sure what you mean ...
Im not exactly sure how to answer that question, but ...
Thats a rather difficult question, but ...
Im sorry, but I dont know much about ...
However, it might be possible that ...
Maybe I can answer your question by telling you about a personal experience I had.
Thats an interesting question ...
Let me see. Well,
上一篇： 雅思口语考试的“潜规则”
下一篇： 三个月打通你的听力和口语
The university of life 生活经历
You're pulling my leg! 你在愚弄我！
Pain in the neck 令人讨厌的事情或人
In good nick 品质好、没有损坏
Chelsea doctor and surfing in Australia 切尔西队医与球队和解，澳大利亚冲浪
Crash course 速成课
Barefaced 厚颜无耻的
Close, but no cigar 几近成功
Phelps makes history and marine species 菲尔普斯创造历史，海洋新物种
Art and football 海底发现文物，莱斯特城足球俱乐部曼谷庆功
To make a monkey out of me 捉弄我
To turn something upside down 把……翻个底朝天
Test the water 试探，摸底
Cheap and cheerful 物美价廉
To make a mountain out of a molehill 小题大做
A bitter pill to swallow 不得不吞的苦药
It takes two to tango 一个巴掌拍不响
The last/final straw 忍无可忍，使人最终崩溃的一击
The cost of protecting the environment, Juno space probe 保护环境付出的代价，“朱诺”木星探测器
Off the hook 脱身
Cyborg beetle and the teenage brain 半机械甲虫，青少年脑部发育
White / blue-collar worker 白领，蓝领
World's longest tunnel and a strange kind of race 世界最长铁路隧道，扛羊毛袋比赛
There's method to my madness 我有一个不合常理的办法
Glass-bottomed bridge, cancer risk for HRT and 120-year-old man 世界最长玻璃桥开放，荷尔蒙替代疗法增患癌风险，印度教120岁僧人
To fall at the first hurdle 跌倒在第一关
Cyclists make Olympic history, 400-year-old shark 英国自行车运动员创英奥运历史，400岁格陵兰鲨鱼
Canada wildfire and NASA discovery 加拿大林火，美国国家航空航天局发现系外行星
Burn a hole in your pocket 有钱不花难受
In the blink of an eye 一眨眼之间