知识拓展

put aside 节省(钱、时间);储蓄;把......放在一边

put away 收拾起来;储存(钱);喝掉

put back 放回原处;拖延 put down 写下;记下;控制

put forward 提出(意见、建议);推荐

put off 延期;推迟 put on 假装;增加;上演(戏剧)

put out 熄灭;使忧虑;扑灭;出版

put up 举起;张开(伞);张贴;为......提供食宿

3. so long as / as long as

as long as 只要，如果

As long as there is life there is hope.

留得生命在,不怕没希望.

You can go out, as / so long as you promise to be back before 11 o'clock.

你可以出去,只要你答应在11点以前回来.

I'll accept any job as / so long as I don't have to get up early.

只要不必早起,任何工作我都可以接受.

在用as / so long as连接的从句中,当其谓语为be,而主语和主句的主语相同时,则从句的主语和be可以省略。如:

I'm sure we are safe as long as (we are) in his care. 我深信只要在他的保护下,我们就会平安无事.

Step 5 Homework

Surf the internet to know more about what we can do about global warming.