内容正文:
Unit 4 Plant life知
识
归
纳
语音语调
1.字母 e 在单词中发 /iː/ 音:he she we me be
2. 特殊疑问句(询问种植动作 / 植物部位)语调为降调,一般疑问句(确认植物生长)语调为升调。
例:What are you doing?↘ Are the seeds growing?↗
必记单词
1. 植物部位类:
seed种子 root根 stem茎 leaf叶 flower花 grain谷粒 wheat小麦
cotton棉花 sunflower 向日葵 lettuce 生菜
2. 动作类:
dig 挖 plant 种植 water 浇水 grow 生长 pick 采摘 make 制作
watch 观察 sleep 睡觉 miss 想念 feed 喂养
3. 其他:
earth泥土 life生活;生命 everything所有事物 cabbage 卷心菜 paper纸 mouse 老鼠 dream 梦想 come true 实现 slowly 缓慢地
常考短语
put……in…… 把……放在……里 watch me grow 看我成长 get big 变大
parts of a plant植物的部位 grow up长大 in the sun在太阳下
make a garden做花园 plant seeds播种 dig the earth挖泥土 water the plants给植物浇水 grow tall 长得高 pick cotton 摘棉花
work in the fields在田地里工作 stay with 和……待在一起 work hard 努力工作
come from plants 来自植物 feed the world 养活世界 want to do想要做
thank you for 因……而感谢你 uses of plants 植物的用处 make paper 造纸
a plant journal 植物观察日记 how often 多久一次 make chairs 制作椅子
how much 多少 once a day一天一次 grow into 长成
take care of plants 照顾植物 six hours a day一天六小时
必会句型
1. 询问正在进行的种植动作:
—What are you doing? 你们正在做什么?—We're + 动词 - ing(种植相关). 我们正在……
例:—What are you doing? 你们正在做什么?
—We're digging the earth. 我们正在挖泥土。
2. 询问植物部位 / 生长情况:
—What part of the plant is it? 这是植物的哪个部位?—It's a/an + 植物部位。它是……
例:—What part of the plant is it? 这是植物的哪个部位?
—It's a root. 它是根。
—Are the seeds growing? 种子在生长吗?
—Yes, they are. / No, they aren't. 是的,它们在生长。/ 不,它们没有。
3. 描述植物生长过程:
—The + 植物部位 + grows into + 植物 / 部位. …… 长成……
例:The seed grows into a small plant. 种子长成了一株小植物。
4. 描述植物用途:
—We use plants to + 动词原形。我们用植物来……
例:We use plants to make paper. 我们用植物来造纸。
5. 祈使句(种植相关指令):以动词原形开头的句子!
—Put the seed in the earth. 把种子放进泥土里。
—Water the plant every day. 每天给植物浇水。
核心语法
1.现在进行时:表示当前正在进行的种植动作(主语 + am/is/are + 动词 - ing)
2. 名词单复数:植物部位的复数变化(leaf→leaves, seed→seeds, root→roots)
3. use sth. to do sth. 句型:表示 “用某物做某事”
4. 一般现在时(描述植物生长规律 / 用途):主语为单数时动词用第三人称单数
考
点
速
记
考点 01
现在进行时(种植相关动作)
结构:主语 + am/is/are + 动词 - ing,用于描述正在进行的种植动作(dig→digging, plant→planting, water→watering, pick→picking)。
第一人称(I/we)用 am/are,第三人称单数(he/she/it)用 is,复数主语用 are。
否定式:主语 + am/is/are + not + 动词 - ing;一般疑问句:Am/Is/Are + 主语 + 动词 - ing?
例如:
—What are they doing? 他们正在做什么?
—They're planting sunflower seeds. 他们正在种向日葵种子。
—Is he watering the wheat? 他正在给小麦浇水吗?
—Yes, he is. 是的,他正在浇。
【拓展】
动词- ing 变化规则(本单元重点):
1.直接加 - ing:water→watering pick→picking grow→growing
2.重读闭音节双写尾字母加 - ing:dig→digging sit→sitting(补充)
3.不发音 e 结尾去 e 加 - ing:make→making take→taking(补充)
提分练
1、 单项选择。
( ) 1. —What ______ you doing? —We ______ digging the earth.
A.are; are B. do; are C. are; is
( )2. —What ______ Amy doing?—She ______ planting lettuce seeds.
A.is; is B. does; is C. are; is
( )3. —Is Tom ______ the cotton?—No, he isn't. He's watering the plants.
A.pick B. picking C. picks
( )4. They ______ not growing flowers. They're growing vegetables.
A.are B. do C. is
( )5. —______ your father planting trees?—Yes, he ______.
A. Do; do B. Is; is C. Are; are
二、按要求完成句子。
1.We are planting bean seeds.(对画线部分提问)______ ______ you ______?
2.She is watering the sunflowers.(改为否定句)She ______ ______ the sunflowers.
3.Are they picking cotton?(作肯定回答)______, ______ ______.
4.He is digging the earth.(改为一般疑问句)______ ______ digging the earth?
5.The students are making a small garden.(对画线部分提问)______ ______ the students ______?
考点 02
植物部位的询问与表达
询问植物部位用 “What part of the plant is it?”,答句用 “It's a/an + 植物部位名词”。
植物部位名词的单复数变化:leaf→leaves(特殊变化),seed→seeds,root→roots,stem→stems,flower→flowers。
描述植物部位特征:用形容词修饰(thin stem 细茎,green leaves 绿叶,big grains 大谷粒)。
例如:
—What part of the plant is it? 这是植物的哪个部位?—It's a leaf. 它是一片叶子。
—These are roots. They're under the earth. 这些是根,它们在泥土下面。
—The stem is thin and strong. 茎又细又结实。
【拓展】
常用植物部位搭配:yellow flower 黄花,small seed 小种子,long root 长根,green leaf 绿叶。
提分练
1、 单项选择。
( ) 1. —What part of the plant is it?—It's a ______. It's under the earth.
A. stem B. root C. flower
( )2. The ______ are green. They make food for the plant.
A. leaf B. leaves C. leafs
( )3. —What are these?—They're ______. The plant grows from them.
A. seeds B. stem C. grain
( )4. This is a ______. It's thin and grows upwards.
A. root B. flower C. stem
( )5. The ______ is yellow. It's beautiful.
A. Leaves B. flower C. roots
二、用所给单词的适当形式填空。
1.There are many ______ (leaf) on the tree.
2.The ______ (seed) are small and brown.
3.This ______ (root) is long and strong.
4.The ______ (flower) are red and pink.
5.The ______ (stem) of the sunflower is tall.
考点 03
名词单复数(植物相关)规则变化:大部分植物部位名词直接加- s(seed→seeds, root→roots, stem→stems, flower→flowers ,grain→grains(规则变化)。
不规则变化:leaf→leaves(把 f/fe 变 v 加 - es)
主谓一致:单数名词作主语时,be 动词用 is,实义动词用第三人称单数;复数名词作主语时,be 动词用 are,实义动词用原形。
例如:
The seed is small. 这颗种子很小。(单数)
The seeds are small. 这些种子很小。(复数)
The leaf turns yellow in autumn. 叶子在秋天变黄。(单数)
The leaves turn yellow in autumn. 叶子们在秋天变黄。(复数)
【拓展】
类似不规则变化的名词:knife→knives(小刀),wife→wives(妻子)与 leaf 变化规则一致。
提分练
1、 单项选择。
( ) 1. The ______ is big. It can grow into a tall plant.
A.seed B. seeds C. seedes
( )2. —Are these ______?—Yes, they are. They're green.
A. leaf B. leaves C. leafs
( )3. The ______ of the wheat are golden.
A. grain B. grains C. graines
( )4. This ______ is thin. Those ______ are thick.
A. stem; stem B. stems; stem C. stem; stems
( )5. The ______ are beautiful. I like pink flowers.
A. flower B. flowers C. floweres
二、判断句子正(T)误(F),错误的请改正。
1.The leafs are green. ( ) ______
2.These seed are small. ( ) ______
3.The stems is tall. ( ) ______
4.Those flowers is red. ( ) ______
5.This root is long. ( ) ______
考点 04
use sth to do sth(植物用途)句型结构:主语 + use + 某物 + to + 动词原形,表示 “某人用某物做某事”。
否定式:主语 + don't/doesn't use + 某物 + to + 动词原形(主语为第三人称单数时用 doesn't)。
例如:
We use plants to make paper. 我们用植物来造纸。
Farmers use seeds to grow crops. 农民用种子来种庄稼。
People don't use flowers to make bread. 人们不用花来做面包。
【拓展】
同义句型:use sth. for doing sth.(后接动词- ing),与 use sth. to do sth. 可互换。
例:We use plants for making paper. = We use plants to make paper.
提分练
1、 单项选择。
( ) 1. We use cotton ______ clothes.
A. make B. to make C. making
( )2. People use wheat ______ bread.
A. to make B. make C. making
( )3. Farmers use water ______ plants.
A. to water B. water C. watering
( )4. We ______ use flowers to feed animals.
A. don't B. doesn't C. aren't
( )5. They use leaves ______ tea.
A. make B. to make C. makes
二、按要求完成句子。
1.We use plants to make chairs.(对画线部分提问)______ do you use plants ______ ______?
2. People use wheat to make noodles.(改为否定句)People ______ ______ wheat to make noodles.
3.Farmers use seeds to grow rice.(改为一般疑问句)______ farmers ______ seeds to grow rice?
4.We use cotton to make T-shirts.(同义句转换)We use cotton ______ ______ T-shirts.
5.They use flowers to make perfume.(对画线部分提问)______ ______ they use to make perfume?
考点 05
描述植物生长过程
常用句型:The + 前一阶段 + grows into + 后一阶段(用一般现在时表示生长规律)。
常用动词:grow(生长),become(变成),turn(变成),come out(发芽),bloom(开花)。
时间状语:every day,in spring,after two weeks 等,体现生长的时间进程。
例如:
The seed grows into a seedling. 种子长成幼苗。
The seedling grows into a small plant. 幼苗长成小植物。
After two months, the plant blooms. 两个月后,植物开花了。
【拓展】
生长过程常用顺序词:first(首先),then(然后),next(接下来),finally(最后)。
例:First, put the seed in the earth. Then water it. Next, wait for it to grow. Finally, it blooms.
提分练
1、 单项选择。
( ) 1. The seed ______ into a small plant.
A. Grow B. grows C. growing
( )2. First, we put the seed in the earth. ______, we water it.
A. Then B. Finally C. First
( )3. After three weeks, the seedling ______ into a big plant.
A. become B. becomes C. becoming
( )4. The flower ______ red in summer.
A. turn B. turns C. turning
( )5. Finally, the plant ______ many seeds.
A. make B. makes C. making
二、连词成句。
1.seed The into grows a plant (.)
_____________________________________________________________________
2.first We earth the put seed in the (.)
_____________________________________________________________________
3.turns The green leaf (.)
_____________________________________________________________________
4.grows Finally many plant seeds the (.)
_____________________________________________________________________
5.water Then we it (.)
_____________________________________________________________________
参考答案
考点 01 提分练
一、1. A 2. A 3. B 4. A 5. B
二、1. What are; doing 2. isn't watering 3. Yes, they are 4. Is he 5. What are; doing
考点 02 提分练
一、1. B 2. B 3. A 4. C 5. B
二、1. leaves 2. seeds 3. root 4. flowers 5. stem
考点 03 提分练
一、1. A 2. B 3. B 4. C 5. B
二、1. F; The leaves are green.
2.F; These seeds are small.
3. F; The stems are tall.
4. F; Those flowers are red.
5. T
考点 04 提分练
一、1. B 2. A 3. A 4. A 5. B
二、1. What; to do 2. don't use 3. Do; use 4. for making 5. What do
考点 05 提分练
一、1. B 2. A 3. B 4. B 5. B
二、1. The seed grows into a plant.
2.First we put the seed in the earth.
3. The leaf turns green.
4. Finally the plant makes many seeds.
5. Then we water it.
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