1、As & Once,As 引导方式状语从句,When at Rome, do as the Romans do. You must do as your parents tell you. 你必须按你父母说的去做。 I have changed it as you suggest. 我已照你的建议作了改动。 I am as you can imagine short of money. 正如你能想像的我很缺钱。 Robbie didnt feel as she did. 洛比没有她那种感觉。,【注】(1)在非正式文体中，like也可用连词，表示方式，与as的用法相似： Nobody loves
2、 you like I do. 没有人像我这样爱你。 She cant cook like her mother does. 她菜做得没有她妈那样好。 (2)有时the way 也可用作连词，表示方式，与as的用法相似： They didnt do it the way we do now. 那时他们不像我们现在这样行事。 I cant help seeing things the way they do. 我禁不住也像他们那样看事物。 You ought to do as I tell you. 你应当照我说的做。,Once 表示暗示一种条件的从句。 Once you understand
3、the principles, all the problems will be easily solved.一旦你理解了这些规则，所有的问题将会迎刃而解。 Once you start, you should continue.你一开了头，就应当继续下去。 Once you understand the rule of game, you will enjoy it . Once he is free, he will play computer games, If the facts once become known, he will be punished.,If one once loses self-confidence, he can never expect to be successful.“ “一个人一旦失去了自信心,就甭想获得成功。“ If the facts once become known, he will be punished. 事实一旦公开, 他就要受到惩罚。 Once printed, this dictionary will be very popular! 一旦出版，这本词典将会非常畅销！ Once he arrives we can start. 他一到我们就可以动身。,
