文档介绍：第一部分教材知识研究
九年级(上)
Unit 2
考点一 辨析should与be supposed to
考点二 辨析lie 与lay
考点三 allow的用法
考点四 辨析turn off, turn on, turn up与turn down
练讲重难点
高频话题写作指导
1. As students, we are ________ (suppose) to obey the school rules.
supposed
练讲重难点
重难点精析
考点一
辨析should与be supposed to
考点抢测
2. Students ________ be brave enough to ask questions.
A. are friendly to B. are good to
C. are supposed to D. look forward to
C
◆should为情态动词,意为“应该;应当”,后接动词原形,无人称和数的变化。常用来表示征询意见、建议、劝告、要求和义务等。
如:(1) You should stop smoking. 你应该戒烟。(劝告或建议)
(2)You shouldn’t talk in class. 你不应该在课堂上说话。(要求或命令)
(3)His schoolbag should be in the classroom. 他的书包可能在教室里。(推测)
满分点拨
◆be supposed to. . . 意为“应该;应当”,其中to是动词不定式符号,其后要跟动词原形。
(1) 当be supposed to. . . 的主语是“人”时,意为“应该……,被期望……”,它可以用来表示劝告、建议、义务、责任等,相当于情态动词should。如:
Everyone is supposed to wear a seatbelt in the car. 每个人坐车时都应该系安全带。
(2) be supposed to. . . 的否定结构为be not supposed to. . . ,意为“不被许可;不应当”。如:
She was not supposed to be angry about that. 她不该为那件事生气。
拓展
(1)suppose sb. /sth. to be 意为“猜测某人/某事……”。
(2)suppose+that从句,意为“认为/猜想……”。
考点二
辨析lie与lay
1. You have to be 18 years old before you are ________(允许) to drive a car.
2. The little girl was crying because her mother didn’t allow her ________ the ice­cream.
A. eat B. eats C. to eat D. ate
allowed
C
考点三
allow的用法
考点抢测
◆allow作动词,意为“允许,让”,后面可直接接名词或代词作宾语。如:
If you allow me, I will send you back. 如果你允许,我就送你回家。
◆常用结构:
allow sb. to do sth. “允许某人做某事”;allow doing sth. “允许做某事”; be allowed to do sth. “被允许做某事”。如:
满分点拨
His parents allow him to watch TV after finishing his homework. 他的父母允许他完成作业后看电视。
Smoking is not allowed in the hall. 大厅里不允许抽烟。
考点四
辨析turn off, turn on, turn up 与turn down
考点抢测
1. Remember to ________ the lights before you leave the classroom.
A. turn on B. turn off
C. turn up D. turn down
B
2. —Do you know what happened this morning?
—I’ve no idea. Let’s ________ the TV to watch the news program.
A. turn off B. turn down
C. turn on D. turn up
C
3. Would you mind ________ the music, ple