look worried
看上去很擔(dān)心的樣子
at the station
在火車(chē)站
used to do
過(guò)去常做
be used to doing
習(xí)慣于做
take a bus to school
乘汽車(chē)去學(xué)校(take)
go to school by bus
乘汽車(chē)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(qǐng)假
2003/12/11
第十一課