精选优质文档-倾情为你奉上UNIT 71. keep/bear sth in mind 牢记在心2. participate in 参加3. long before 很久以前 before long不久之后4. set sail for sp. 起航去某地 set off/ out for sp.=leave for sp 动身去某地set out to do sth = set about doing sth着手做某事5. force sb to do sth 强迫某人做某事 by force 武力，强行 come into force 生效6. have trouble with sth = have trouble (in) doing sth 做某事有麻烦7persuade sb (not) to do sth 说服某人做(不做)某事 = persuade sb into/ out of doing sth8. make it to sp. 到达某地 make it 成功，约定时
