九年级英语人教版上册课件：Unit 7 语法写作课件

即学即练
一、单项选择
1．—It’s difficult to get to the other side of the river.
—I think a bridge ____A____ over the river so that
people can get the other side easily.
＋宾语). 应该在十点之前完成。
主语＋情态动词 Those books mustn't be 否定句 ＋not＋be done taken out of the library.不
(＋by＋宾语). 准把那些书带出图书馆。
句式
结构
例句
一般疑 问句
情态动词＋主语 ＋be done(＋by＋ 宾语)？
—So some rules ____B____ to stop people from
polluting food.
A．must make
B．must be made
C．must made
D．be made
3．(中考·南京)We're sure that the environment in our city
As a student, your homework must be finished by yourself.作为一个学生，你的家庭作业必 须由你自己完成。
典例
Teenagers should ____D____ to take care of themselves from a young age. (临沂) A．educate B．be educating C．have educated D．be educated
注：表格中的(＋by＋宾语)可省略。
ቤተ መጻሕፍቲ ባይዱ 典例
Hurry up! The exam must ____B____ in
100 minutes.
(株洲)
A．finish
B．be finished
C．is finished
【点拨】句中exam与finish之间为被动关系，情态动词 must被动语态构成为“must ＋ be ＋ 过去分词”。
返回
考点 1 含有情态动词的被动语态的构成 其结构为：情态动词＋be动词＋过去分词 常考的情态动词有：can/could，may/might， must，need，should等。 eg：Iron can be used to make all kinds of useful tools. 铁可以用来做各种各样有用的工具。
____D____ greatly through our work in the near future.
A．improved
B．was improved
C．has improved D．will be improved
4．—How often do I need to water the flowers? —They ___C____ every day, or they will wither(枯萎)． A．must water B．mustn’t water C．must be watered D．mustn’t be watered
His hair is too long. It__sh__o_u_ld__ ____b_e___ ____c_u_t__． 8．My mother asked me to do the homework at once.
May these rooms be cleaned tomorrow？这些 房间可以明天打扫吗？
特殊疑问词＋情 When should these books
特殊疑 态动词＋主语＋ be sent to the children in
问句
be done(＋by＋宾 语)？
mountain areas？这些书 应该什么时候送给山区 的孩子们？
【点拨】句中teenagers与educate之间为被动关系；情态动 词should被动语态构成为“should ＋ be ＋ 过去分词”。
考点 2 含有情态动词的被动语态的句子结构
句式
结构
例句
主语＋情态动词 The work should be 肯定句 ＋be done(＋by finished by ten.这项工作
【点拨】句本题用语法判定法解题。根据句意可知应该用 被动语态的肯定结构。其结构为：情态动词＋be＋过去分 词。故选C。
5．Thanks to the Internet, different kinds of information ____A____ in a short time. A．can be learned B．has been learned C．can learn D．has learned
Unit 7 Teenagers should be allowed to
choose their own clothes.
语法点集中攻坚 单元要点大本营 单元一法练写作
语法讲堂
含有情态动词的被动语态
英语中有两种语态：主动语态和被动语态。 主动语态表示主语是动作的执行者；被动语态表示 主语是动作的承受者。本单元重点讲解含有情态动 词的被动语态。
A．should be built B．should build
C．may build
D．may be built
【点拨】句中本题考查被动语态。根据主语a bridge与 build之间存在被动关系可知用被动语态。情态动词的被动 语态的结构为：情态动词＋be＋动词的过去分词。由语境 可知选A。
2．(中考·咸宁)—Food safety is very important.
【点拨】句中本题考查被动语态的用法。information“信 息”和learn “学习”之间是被动关系，答案C、D是主动语 态，先排除；根据句意应该用一般现在时，故选A。
二、把下列句子改为被动语态 6．We should help Mary with swimming.
Mary _s_h_o_u_l_d__ ____b_e___ __h_e_l_p_e_d_with swimming by us. 7．His hair is too long. He should have it cut.