(共8张PPT)
Unit 9 Have you ever been to a museum?
Section B
Grammars
人教新目标版英语八年级下册
情景导入
1 2 3, 4 5 6, 7 8 9
百
hundred
千
thousand
百万
million
新知讲解
1. Have you ever tried Chinese food?
try
try sth.
尝试做某事
try on
试穿
try one’s best to do sth.
尽某人最大努力去做某事
try to do sth.
努力去做某事
try doing sth.
尝试去做某事
新知讲解
2. For thousands of tourists from China, this small island in Southeast
Asia is a wonderful and safe place to take a holiday.
thousands of
数以千计的
hundreds of
millions of
(1) thousands of 后接可数名词复数，用于表示不确定的数量。
There are thousands of visitors to our school every year.
(2) 当thousand前有具体数词修饰，表示确切的数目时，thousand要用单数形式，并且不能与of连用。
There are three thousand students in our school.
注意：
a … place to do sth. 做某事的……的地方
新知讲解
3. Whether you like Indian food, Western food or Japanese food, you’ll
find it all in Singapore!
whether conj.
不管……（还是）；或者……（或者）；是否
(1) whether，意为“不管……（还是）”，常与or连用，引导让步状语从句，从句中通常用一般现在时表示将来。
Whether it is easy or difficult, we won’t give it up.
(2) whether还可以表示“是否”，引导宾语从句，通常可与if互换。
We don’t know whether they can come here on time.
We don’t know if they can come here on time.
We don’t know whether they can come here on time or not.
典型习题
根据汉语，完成句子
1. 我们应该竭尽全力，以便按时完成工作。
We should ________ ________ _______ so that we can finish the work on time.
2. 数以千计的学生每年夏季参加各种各样的课程。
__________ _____ _________ take all kinds of classes in summer every year.
3. 不管是成功还是失败，我们都必须尽力而为。
________ we succeed _______ fail, we have to try our best.
try our best
Thousands of
Whether
try one’s best to do sth.
students
or
总结提升
thousand的用法
whether的用法
try构成的常用词组
再见！
