【核心考点】外研四下Unit 4 Plant life 知识清单+练习(含答案)

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【核心考点】外研四下Unit 4 Plant life 知识清单+练习(含答案)

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Unit 4 Plant life 知识清单
重点单词
(植物器官)
seed 种子 root 根 stem(植物的)茎,梗,柄 leaf 叶,叶子
(农作物)
sunflower 向日葵 wheat 小麦 cotton棉花,棉株
cabbage卷心菜,洋白菜,甘蓝
(其他名词)
life 一生,生活 earth 泥土,土壤 mouse 老鼠
grain 谷粒 paper 纸
(其他动词)
dig 挖,掘 sleep 睡,睡觉 miss 想念,思念,怀念(某人)
will将,会,要(用于构成将来时)
(其他)
thin 细的 everything 每件事物;所有事物
重点短语/惯用语
in the earth在泥土里 grow up 长大
sunflower seeds 向日葵种子 water the wheat 给小麦浇水
pick cotton摘棉花 stay with 和……待在一起
rice plant 水稻 come true 实现
For what 为了什么?
字母
e—/i/ he 他 she 她 we我们 me我 be是
重点句式
询问某人正在做什么
-What are+主语(复数)+动词-ing 形式
-We're/They’re+动词-ing 形式(+其他)
问句是由what引导的现在进行时的特殊疑问句,用来询问多个人正在做什么。
e.g: - What are you doing - We’re digging.
确认某些事物的动态
-Are+某些事物+动词-ing 形式(+其他)
- Yes, they are./ No, they aren’t.
问句是以be动词are开头的一般疑问句,用来确认某些事物的动态。
e.g: - Are the bananas getting yellow - No, they aren’t.
(3)询问某种情况没有发生的原因:
Why do/does not +主语+动词原形(+其他)
e.g: Why don't Sam's seeds grow
语法一:动词-ing形式的变化规则
变化规则 例词
一般情况下,直接在动词词尾加-ing plant-planting; act-acting
以不发音的字母e结尾的动词,先去掉e,再加-ing make-making; ride-riding
以重读闭音节结尾且末尾只有一个辅音字母的动词,双写末尾辅音字母,再加-ing swim-swimming;run-running;dig-digging
语法二:How many, How much, How often的用法区别
how many 意为“多少”,后接可数名词复数,用来询问可数事物的数量。
how much ① 意为“多少”,后接不可数名词,用来询问不可数事物的量;
② 意为“多少钱”,用来询问价格。
3. how often 意为“多久”,用来询问频率。一般用once, twice, three time a day/week/month/year...等表示频率的词来回答。
e.g: How many sunflowers are there in the field 田野里有多少向日葵?
How much sunlight does it need 它需要多少阳光?
How much are these seeds 这些种子多少钱?
How often do you water it 你多久给它浇一次水?
语法三:情态动词will的用法
用于构成将来时,没有人称和数的变化,后接动词原形。
结构:主语 + will + 动词原形 (+ 其他);否定形式:will not = won't
e.g: I think his dream will come true!
Trust him! He won’t be late for school tomorrow.
一、判断句中单词画线部分发音是(T)否(F)相同。(5分)
( )1. He wants corn, but she wants carrots.
( )2. Yummy food comes from plants. Everything is so good.
( )3. Wow! The stem is red.
( )4. Plants can help us grow. We need them.
( )5. These beans are green. I want to eat them for breakfast.
二、选择合适的内容补全句子。(10分)
1. These__________ (seeds/seed) can’ t grow!
2. Everything__________ (is/are) so good.
3. Your dad is__________(makes/making) a garden for your family.
4. Thank you for__________(helping/help) us grow!
5. We use tomatoes__________(cook/to cook) noodles.
三、Ms Smart带着同学们一起来到了菜园。根据情境,选择合适的选项补全对话。
Ms Smart: Children, look! The vegetables in the garden grow well.
Li Ming: 1. ________
Ms Smart: He is watering the vegetables. Look at the potatoes. What part can we eat
Li Ming: 2. ________
Ms Smart: No, we can't. We can eat their stems.
Fangfang: 3.________
Sam: Yes, I am.
Ms Smart: Plants are useful. 4. _______ What do you want
Fangfang: 5. ________
四、看西红柿的生长过程,判断句子的正(T)误(F)。
(1) On Day 7, the tomato is a seed and says "I am a seed." ( )
(2) When the tomato is 45 days old, it is tall and green. ( )
(3) Tomatoes need air, water and the sun to grow. ( )
(4) When the tomato is 70 days old, people will pick it up. ( )
(5) This passage is about plants around us. ( )
参考答案
一、1-5 TFTFF
二、seeds; is; making; helping; to cook
三、DCABE
四、FTTFF
一、词句汇总
二、语法复习
三、单元练习
A.Sam, are you digging the potatoes
B.Our food comes from plants.
C.Can we eat the leaves
D.What is the man doing
E.l want some tomatoes.
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