内容正文:
Unit 4 Language and communication
⭐Lesson3知识点清单
1. 主题词汇:动物交流
· animal talk (动物语言/交流)
· communicate (交流,沟通)
· body language (肢体语言)
· make sounds (发出声音)
· special sounds (特殊的声音)
· send and receive messages (发送和接收信息)
· 动物及其声音:
· dolphin (海豚) —— clicks and whistles (咔哒声和口哨声)
· dog (狗) —— bark (吠叫)
· cat (猫) —— meow (喵喵叫)
· lion (狮子) —— roar (吼叫)
· bee (蜜蜂) —— buzz (嗡嗡声)
· duck (鸭子) —— quack (嘎嘎叫)
· 其他相关词汇:
· grammar (语法)
· fear (恐惧)
· funny (滑稽的)
· angry (生气的)
· afraid (害怕的)
· ground shake (地面震动)
2. 语法重点:连词 Until
· 含义: “直到……为止”,表示某个动作或状态持续到另一个动作发生为止。
· 用法:
1. 肯定句中,主句的动词通常是延续性动词(表示持续的状态或动作)。
· The cat will meow until you feed it. (猫会一直叫直到你喂它。)
2. 否定句中,主句的动词通常是瞬间性动词(表示动作的发生)。
· I didn't understand until she explained. (直到她解释了我才明白。)
3. 时态搭配: 主句常用一般将来时或一般过去时,从句常用一般现在时或一般过去时(遵循“主将从现”或“主过从过”原则)。
· It will be a long time until scientists understand all of it. (科学家要花很长时间才能完全理解这一切。)
⭐Lesson3同步练
一、用括号内单词的适当形式填空
1. Dolphins are very smart animals and they can __________ (communicate) with each other by making special sounds.
2. The little dog __________ (bark) loudly when a stranger came to the door.
3. My cat often __________ (meow) at me in the morning to ask for food.
4. Elephants can __________ (feel) the ground shake and understand the message from far away.
5. Bees __________ (dance) to show other bees where flowers are.
6. Some animals use body language to show their __________ (feel), like fear or happiness.
7. I didn't know the answer __________ (until) the teacher explained it clearly.
8. The baby cried __________ (loud) because he was hungry.
9. Scientists are still studying how animals __________ (send) messages to each other.
10. It's interesting that some spiders can __________ (jump) and dance to communicate.
11. We should protect animals because they have their own __________ (language).
12. The lion let out a loud __________ (roar) to show it was the king of the forest.
13. I will wait for you __________ (until) you finish your homework.
14. Many birds make beautiful __________ (sound) to attract their mates.
15. The students were very quiet __________ (until) the teacher came into the classroom.
二、单项选择题
1. How do you think animals __________ with each other?
A. talk
B. communicate
C. speak
D. say
2. A dog usually __________ to show it is happy or wants attention.
A. barks
B. meows
C. roars
D. buzzes
3. Bees dance to tell other bees __________.
A. where the flowers are
B. how to fly
C. when to sleep
D. what to eat
4. Elephants can sense danger by __________ the ground shake.
A. seeing
B. hearing
C. feeling
D. smelling
5. The little bird made a soft __________ when it saw its mother.
A. bark
B. roar
C. chirp
D. buzz
6. I didn't understand the story __________ I read it again.
A. after
B. when
C. until
D. because
7. The cat will keep __________ until you open the door.
A. sleeping
B. eating
C. meowing
D. running
8. Some animals use __________ language, like moving their tails or ears.
A. body
B. spoken
C. written
D. sign
9. Scientists are trying to learn more about animal __________.
A. games
B. food
C. talk
D. homes
10. It will be a long time __________ we fully understand how dolphins communicate.
A. after
B. until
C. when
D. while
11. The lion's __________ can be heard from miles away.
A. bark
B. meow
C. roar
D. quack
12. Bees __________ to show other bees where flowers are.
A. jump
B. dance
C. sing
D. fly
13. I didn't go to bed __________ I finished my project.
A. after
B. before
C. until
D. when
14. Animals have their own ways to __________ feelings.
A. express
B. hide
C. forget
D. change
15. The spider __________ on the web to catch insects.
A. dances
B. jumps
C. sings
D. sleeps
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