重點講解：
1. fall off
脫落；掉落；
eg. They fall off their bikes.
他們從自行車上摔下來P_jo,lb@)32R。
eg. I saw the boy was about to fall off and caught him just in the nick of time.
我見這男孩快要掉下去，便及時把他抓住了d&7Ylv3qyi%WP0w。
2. used to do sth.
過去常常；過去曾做某事；
eg. The old-timers used to recall how hot 1886 was.
老人們常常回想起1886年的酷熱2OY-(4_0fV,。
eg. I used to write during my free periods at school.
過去我經(jīng)常在課余時間寫作WQU[D~OYcQ6L。
3. and so on
及諸如此類；等等；
eg. She spends her day doing housework, watching television, reading, and so on.
她以做家務(wù) 、 看電視 、 看書等等度過一天)nF.UO1ot=dw*nMIm#l。
eg. Consumer durables such as refrigerators, television sets, bicycles and so on were produced in large quantities.
冰箱、電視、自行車等耐用消費品被大批量地生產(chǎn)出來Ebvl~aywf.m6n!5;w6mZ。