重点讲解：
1. lead to
招致；致使；导致；
eg. It will lead to devaluation of a number of European currencies.
这将会造成数种欧洲货币的贬值。
eg. Such an offence will lead to a summary fine.
这类过错要当场予以罚款。
2. on time
按时；准时；
eg. The car was not returned on time, then was reported stolen.
这辆车没有按时归还，然后就报失了。
eg. He will come on time even if it rains.
即使下雨,他还是会准时来的。
3. turn up
（常指出其不意地或经长久等待后）出现，到来，露面；
eg. He kept turning up like a bad penny at every party.
没有哪次晚会见不到他，真令人讨厌。
eg. I'm very glad you turned up so early.
我很高兴你们来得这么早。
