重點講解：
1. check out
查看；了解；
例句：I just want to drive around town and check out the main strip.
我就想駕車在城里兜兜，看看主要街市7_i29Wir8su(。
2. was/were supposed to do sth.
本應(yīng)該(發(fā)生而沒有發(fā)生)；
例句：Yes, but he was supposed to be back by now.
是的，可他該回來了6kKBBw9%,mi7Q。
3. lose track of
跟不上…的進(jìn)展；不再掌握…的最新情況；
例句：It's so easy to lose track of who's playing who and when.
很容易就忘記誰要和誰比賽，什么時候比Rq._x]ay1*Qs。
4. drop off
中途放下（某人）；中途卸下（某物）；
例句：Just drop me off at the airport.
就讓我在機場下好了.W@n!3(jEksojOHplZ|M。
5. end up (in) sth./doing sth.
最終；結(jié)果；到頭來；
例句：We talked so long,I end up missing class.
我們談了好久，把課都給誤了)1R1yR*51@5WKrENfX。