look worried

看上去很擔(dān)心的樣子

at the station

在火車站

used to do

過去常做

be used to doing

習(xí)慣于做

take a bus to school

乘汽車去學(xué)校(take)

go to school by bus

乘汽車去學(xué)校（go）

make a fire

生一堆火

have a look

看一看

the balance of nature

生態(tài)平衡

lesson note

課堂筆記

two modern cities

兩座現(xiàn)代化的城市

ask for leave

請假

2003/12/11

第十一課