Q1. 他在会议上发了言. what is 上 used for in the sentence? 会议上(during the meeting, emphasize the place where he gave the words) Q2. 人到中年容易发胖. Does dao mean "become" or something like this? 到(arrive, reach, approach a state, a status, a place) when 人 is approaching 40 years old, [it is easy](容易) [to grow fat](发胖). Q3. 头一下子晕起来了. Why can it just be "yunle" ? My head 一下子(suddenly!) feels dizzy. here we want to emphasize how quick and how unexpected the sickness came. Q4. How do you indicate " if or if not " in chinese? " if (Ru Guo 如果) if not (Ru Guo Bu 如果不) Q5. Does 上不了 mean "can not" ? How do i use this in a setence? means "can not reach certain level of state" eg. 如果车的速度上不了100mph，就不能准时到达白宫。 If the car speed can not be reached at 100mile/per/hour, we won't make it to the Whitehouse.

Q1： 上 在汉语中用在名词的后面，表示时间、处所、范围 例如 晚上。桌上。组织上。会议上。: