重点讲解：
1. compared to 与…相比；和…比起来；
例句：Compared to other vehicles,cars are really quite convenient.
同其他车辆相比，汽车确实很方便aU+daa)x(.%2+QK。
2. hang out 闲逛，逗留；
例句：We can just hang out and have a good time.
我们可以只是闲逛一下，开开心!Cdmn%nb1!。
3. for sure 无疑；肯定；
例句：Even to this day we don't know what happened for sure.
即使到现在我们也不确定究竟发生了什么;Yg3RGfuQ)i[EcFO^.。
4. make sure 一定要；设法保证；
例句：The examiner never left the classroom to make sure there was no cheating.
主考人一刻也没有离开教室以确保不发生作弊j@~MOa~dc~BPh,。