资料简介
Unit 5 Look into Science
Lesson 28
Ⅰ. 根据汉语提示写出下列单词或短语
1. 移居; 迁徙 v. _______
2. 奇异的; 了不起的; 极好的 adj. ________
3. 令人费解的 adj. ________
migrate
fantastic
puzzling
4. biology为名词, 意为“ ____________”, ________意为
“生物学家”。
5. grand意为“庄严的, 外祖的, 外孙的”, child意为“孩
子”, __________ 意为“外孙, 外孙女, 孙子, 孙女”。
6. butter意为“黄油”, fly意为“飞”, ________意为“蝴
蝶”。
生物学; 生物 biologist
grandchild
butterfly
7. complete为形容词, 意为“完全的”, 其副词形式为
“__________”, 意为“完全地”。
8. 吸引某人的注意 __________________
9. 鼓励某人做某事 _____________________
completely
draw one’s attention
encourage sb. to do sth.
Ⅱ. 根据汉语提示完成下列句子
1. 这些飞回南方的蝴蝶是飞往北方的曾曾子孙。
The butterflies ____ ______ __ the south are the
great-great grandchildren of the butterflies ____ ___
___ the north.
that return to
that left
for
2. 当他们春天开始向北方飞行时, 雌性蝴蝶产卵。
______ they _____ __ _____ north in spring, the
females ___ ____.
When begin to travel
lay eggs
3. 但是在墨西哥, 人们砍伐了蝴蝶赖以休息的树木, 因
为它们需要更多的土地来耕种。
But in Mexico, people ___ _____ the trees that the
butterflies need to rest on _______ they want more
land ___ _______.
cut down
because
for farming
4. 科学家仍然不理解蝴蝶怎样知道什么时候飞回南
方。
Scientists still don’t understand ____ the butterflies
know _____ __ ___ south.
5. 有许多奥秘还需那些对科学感兴趣的人来发现。
There are many mysteries yet __ ___ __________ ___
those interested in science.
how
when to fly
to be discovered by
Ⅲ. Read the text and answer the questions
1. How far does this butterfly in North America travel
south in fall?
______________________
2. Where do the butterflies in Mexico lay eggs?
_____________________________
About 4 000 kilometers.
They lay eggs on only one plant.
要点1 as many as 多达
Step 1难点·探
(1)as many as 修饰可数名词, 还是修饰不可数名词?
(2)与as many as的相关短语是什么?
Step 2语境·悟
*Here, as many as 230 million butterflies spend the
winter. 多达两亿三千万只蝴蝶在这里过冬。(P72)
*Take as many as you please. 你要多少就拿多少。
Step 3知识·得
as many as 的用法
as many as 意为“多达, 同……一样多”, 用来修饰可
数名词。
【辨析】as many as与as much as
as many as 修饰可数名词, 常用在人或物的具体数量前,
侧重于具体数目, 意思是“和……一样多”, “多达
……”, 表示“数目”上的比较; as much as修饰不可
数名词, 常用在“雨量、水量、时间量、重量、钱数、
价格”等方面, 表示总量和单位量的大小, 表示程度。
Step 4考点·练
( )It’s a harvest season, 500 workers are working
on the farm.
A. as many as B. as little as
C. as much as D. as few as
A
要点2 leave for 动身去……
Step 1难点·探
(1)leave for后跟的是目的地, 还是出发地?
(2)leave的几种用法是什么?
Step 2语境·悟
The butterflies that return to the south are the great-
great grandchildren of the butterflies that left for the
north. 返回南方的蝴蝶是前往北方的蝴蝶的曾曾孙子
(女)。(P72)
*The boy left here without saying a word.
小男孩没说话就离开了。
*Don’t leave the baby alone at home.
不要单独把孩子留在家里。
Step 3知识·得
leave的一词多义
含义 用法
离开
①leave A 离开A地;
②leave for A 动身去A地;
③leave A for B 离开A地去B地
遗留, 遗忘 leave sth. at/in. . . 把某物遗忘在……
使保持
某状态
①leave+宾语+宾语补足语;
②leave. . . alone不理会, 不管……
Step 4考点·练
( )①(2018·达州中考)—Jack, remember _______
off the lights when ________your bedroom.
—OK, I won’t forget, Mom. 世纪金榜导学号
A. turning; leaving
B. to turn; leave
C. turning; left
D. to turn; leaving
D
②Xu Lei and her teammates are ___________(将要动
身去) the U. S. A. next week.
leaving for
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