keep sb. from doing sth. 阻止某人做某事
protect sb. from...保护某人不受??侵袭，挡住，防御
keep sb. doing sth. 让某人一直做某事
[即学即练5]
(1)What can we do to ___________________ this disease ______ ___________？我们能做什么来防止这种疾病蔓延呢？
(2)Don't ______ others ________ for long.不要让别人等太久。
答案：prevent/stop/keep from spreading；keep waiting
提示：(1)在被动句中 from 均不能省略。如：We were
stopped/prevented/kept from going out by the heavy rain.大雨使我们无法外出。
(2)protect...from...中 from后接能带来伤害或损害之事物。如：They huddled together to protect themselves from the wind. 他们挤在一起，免受风吹。
6．cheer up 感到高兴；感到振奋
cheer sb. up 使某人高兴；使某人振奋
cheer on 为??加油
cheer sb. 为某人喝彩
with good cheer 欣然地
Cheers! 干杯！祝你健康！(用于祝酒)
[即学即练6]
(1)______ ______！ The news isn't too bad.振作一点吧！也不是什么太坏的消息。
(2)Every time an English runner won a race, the crowd _________.每次英国选手赢得赛跑冠军，观众就欢呼。
(3)The crowd __________ their favourite horse ______.观众都替他们看好的马加油。
答案：Cheer up；cheered；cheered on
7．break out (战争、灾难、瘟疫等)突发；爆发(无被动语态)
①The Second World War broke out in September 1939.“二战”是1939年9月爆发的。
②A fire broke out in the neighborhood last night.昨晚居民区里发生了火灾。
拓展：break away from 脱离(政党等)；打破(陈套等)
break down 出故障，抛锚；(计划等)失败；(身体、精神等)垮掉；打倒，砸破；(化合物等)分解
break in 破门而入；闯入；打断(话语等)
break into 破门而入，突然??起来
break off 折断；突然中止，断绝，结束
break through 突破
break up 打碎，拆散；散开，解散；(学校)期末放假，(集会)结束
break into pieces 成为碎片
[即学即练7]
介、副词填空
(1)She started to speak, then broke ______ while a waitress served us with coffee.
(2)He lost his job and his marriage broke ______.
(3)Her health broke ________ under the pressure of work.
答案：off；up；down
(4)Should another world war break ______， what would become of human beings?
(5)Firemen had to break the door ______ to reach the people trapped inside.
(6)The meeting broke ______ at eleven o'clock.
答案：out；down；up
8．watch out 注意；当心
watch out(for)＝ look out (for)密切注意；留神
take care 留神，注意
be careful 仔细，留神
watch it 当心，小心
watch over 照看；看守
keep a close watch/eye on 密切注视
[即学即练8]
(1)______ ______！ There is a car coming!当心！有车来了！
(2)______ ______ ______ cars while crossing the road.过马路时要当心车辆。
(3)______ ______ not to catch a cold.＝______ ______ not to catch a cold. 当心别着凉。
答案：Watch out；Watch out for；Be careful；Take care
易 错 点 拨
自我完善?误区备考
1. unlike/dislike/alike/likely
(1)unlike prep.不同；不像
(2)dislike vt. 不喜欢
(3)alike adj. 相似的，同样的
(4)likely adj. 很可能发生的，有希望的
解析：now that 引导原因状语从句，相当于 since，意为：既然。
答案：D