重点讲解：
1. as soon as 一…就…；
例句：As soon as we opened the front door we could smell the gas.
我们一打开前门，就闻到了煤气的味道@Sy5ZOm_J4^Gr7Z0UJ。
2. tell apart 区分；区别；辨别；
例句：The twins look so much alike that you can hardly tell them apart.
这对双胞胎长得一模一样，简直分不出谁是谁-G|hv5=MpSo0A;HFXc。
3. come up with 想出，提出(计划、想法等)；
例句：I've racked my brains, but I have not yet to come up with any solution to the problem.
我已经绞尽脑汁了，但是还没给那个问题找到任何答案QV^BicH,miI4d5.vA5。
4. stand up (要求或证据)经得起检验，能够成立；
例句：He made wild accusations that did not stand up.
他的指控毫无根据，根本站不住脚4t,rDzp1-3dWS。