高中英语新课程标准教材
英语教案( 2019 — 2020学年度第二学期 )
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英语教案 / 高中英语 / 高三英语教案
编订：XX文讯教育机构
2019高考英语一轮复习Unit 22
教材简介:本教材主要用途为通过学习英语的内容，提高学生的语言技能，增加一项语言能力，有利于国际化的日常交流、生活、工作等，本教学设计资料适用于高中高三英语科目, 学习后学生能得到全面的发展和提高。本内容是按照教材的内容进行的编写，可以放心修改调整或直接进行教学使用。
XX高考英语一轮教学案大纲版
unit 22
理解:要点诠释
单词
1.prevent
讲: v. 妨碍；阻碍；防止；预防
例：we should do our best to prevent accidents.
我们应该尽力防止事故发生。
however,some psychologists warn that too much study can prevent a child from developing normally.
然而心理学家警告说学生负担太重会阻止孩子正常发育。
her sudden arrival prevented him(from)going out.
她突然来到使他不能外出。
链接•提示
prevent sb. (from)doing=stop sb. (from)doing=keep sb. from doing 阻止某人做某事
在主动语态中，使用stop或prevent时，可省略from，用keep时不可省略from，因为keep...doing的意思为“某人一直做”；在被动语态中都不可省略from。
练：—what _____ you to come to the party?
—an unexpected accident _____ me going.
a.prevented;forbad
b.protected;forbad
c.forbad;prevented
d.stopped;kept
提示:该题考查动词搭配及意义的辨析。forbid sb. to do禁止某人做某事；prevent sb. (from)doing防止、妨碍某人做某事；stop sb. (from)doing让某人停止做某事；keep sb. from doing不让某人做某事；protect sb. from+n.保护某人躲开某物。
答案:c
2.divide
讲: v. 分；划分；分开；隔开
例：how should we divide our work?
我们怎样分工？
the red sea divides africa from asia.
红海把非洲和亚洲分开。
let’s divide ourselves into several groups.
咱们分成几个小组。
链接•提示
(1)divide...into...把……分成……
(2)divide sth.between/among sb.(在……之间)分配；分享；分担
(3)divide by用……除(尽)；因……分裂
(4)divide and rule分而治之
练：(1)he _____ his time between reading and writing.
a.divides
b.joins
c.separates
d.devotes
提示:从句意和结构看，应该使用divide，divide sth.between a and b把(时间、精力等)分别用于……。
答案:a
(2)he divided the tools _____ the children,who were _____ three groups.
a.between;separated from
b.among;divided into
c.in;divided into
d.among;separated from
提示:divide among/between在……之间分；divide...into...把……分成……。答案:b
3.risk
讲: v.冒风险(或危险)
n. 危险；风险；危险人物
例：he risked his life to save her.
他冒着生命危险去救她。
if you put money into gambling or horseraces,you risk losing it.
如果你把钱投到赌博或赛马里，你就有输掉的危险。
when you buy land,you take the risk that it will lose value.
你买地时，就承担了土地贬值的风险。
smoking can increase the risk of developing heart disease.
吸烟会增加得心脏病的危险。
链接•提示
(1)at risk(from/of sth.)有危险；冒风险
(2)at the risk of doing sth.冒着……风险
(3)at risk to yourself/sb./sth.冒伤及……的危险
(4)run/take the risk of doing sth.冒……的危险；冒险做某事
练：the young man was brave enough to risk____ into____ prison by the enemy.
a.putting;the
b.to put;/
c.putting;a
d.being put;/
提示:risk后只能接动名词作宾语，不可接动词不定式作宾语，排除b项；主语the young man与put之间有逻辑上的动宾关系，故选d。本题也可以从动词短语put sb.into prison 入手。
答案:d
短语
1.take turns
讲:该短语的义项为“轮流”。
例：mary and helen took turns at sitting up with their sick mother.
玛丽和海伦轮流熬夜陪伴他们生病的母亲。
