Unit 6 Whats amazing about plants(期末知识清单)英语沪教版四年级上册(新教材)
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Unit 6 What’s amazing about plants? 期末知识清单
沪教版四年级上册(新教材)
知识归纳
必记单词
*flower 花 *fruit 果实;水果
leaf 叶子 soil 土壤
sunflower 向日葵 seed 种子
*put 放 *plant 植物
root 根 *tall 高的
round 圆形的 oil 食用油
amazing 令人惊叹的
常考短语
a lot of 许多 school garden 学校花园
grow down 向下生长 in the soil 在土壤里
big and strong 又大又壮 watch it grow 看着它生长
sunflower seeds 向日葵种子 make oil 榨油
come out 出来 put...in... 把……放进……里
a big yellow flower 一朵大黄花 some green leaves 一些绿叶
必会句型
1. The plant grows. 植物生长。
2. It has some roots. 它有一些根。
3. It doesn’t have a flower. 它没有花。
4. People can make oil from the seeds. 人们可以用种子榨油。
5. Sunflowers are amazing! 向日葵令人惊叹!
6. There are many plants in the school garden. 学校花园里有许多植物。
核心语法
考点 01 have 的三单形式 has
考点 02 doesn’t have 否定
考点 03 can / can’t
考点 04 名词复数:leaf → leaves
知识点拨
考点 01 have 的三单形式 has
It has some roots. 它有一些根。
The plant has green leaves. 植物有绿叶。
▸ have 表示“有”,它的第三人称单数形式是 has。
解析:have 表示“有”。主语是 it、the plant、my sunflower 等第三人称单数时,have 变成 has;主语是 we、they、the carrots 等复数时,仍然用 have。
一、单数主语用 has
it、the plant、my sunflower 等单数主语后面用 has。
例句:It has a big yellow flower. 它有一朵大黄花。
例句:My sunflower has a lot of seeds. 我的向日葵有许多种子。
二、复数主语用 have
the carrots、the trees 等复数主语后面用 have。
例句:The carrots have green leaves. 胡萝卜有绿叶。
三、have → has 是不规则变化
gets、snows 等动词直接加 s 构成三单形式,但 have 的三单是 has,不是 haves。
例句:It has a round flower. 它有一朵圆形的花。
⚠ 易错提醒:It has some roots.(√) It haves some roots.(✗) have 的第三人称单数是 has!
✎ 大显身手
一、单项选择
( )1. The plant ______ some green leaves.
A. have B. has C. having
( )2. It ______ a big yellow flower.
A. has B. have C. haves
( )3. The carrots ______ green leaves.
A. has B. haves C. have
( )4. My sunflower ______ a lot of seeds.
A. have B. has C. is
( )5. This plant ______ a round flower.
A. has B. have C. haves
二、从括号中选出合适的词填空
1. It ______ (have / has) some roots.
2. We ______ (have / has) a school garden.
3. The trees ______ (have / has) green leaves in spring.
4. I ______ (have / has) a sunflower seed.
5. The tree ______ (have / has) many flowers.
考点 02 doesn’t have 否定
It doesn’t have a flower. 它没有花。
It doesn’t have roots or leaves. 它没有根和叶子。
▸ has 的否定用 doesn’t have;doesn’t 后面的动词用原形 have。
解析:否定“没有”,主语是 it、the plant 等第三人称单数时,用 doesn’t have;doesn’t 后面的动词用原形 have,不能写成 doesn’t has。主语是 we、they 等复数时,用 don’t have。
一、It doesn’t have + 名词
单数主语后面用 doesn’t have,表示“没有”。
例句:The little seed doesn’t have leaves. 小种子没有叶子。
二、复数主语用 don’t have
the trees、we 等复数主语后面用 don’t have。
例句:The trees don’t have leaves in winter. 冬天树没有叶子。
三、肯定句 ↔ 否定句
肯定句里的 has 变成否定时,要写成 doesn’t have。
例句:The plant has a flower. → The plant doesn’t have a flower. 植物有一朵花。→ 植物没有花。
⚠ 易错提醒:It doesn’t have a flower.(√) It doesn’t has a flower.(✗) doesn’t 后面的动词用原形 have!
✎ 大显身手
一、单项选择
( )1. It ______ have a flower.
A. doesn’t B. don’t C. isn’t
( )2. The trees ______ have leaves in winter.
A. doesn’t B. don’t C. aren’t
( )3. The little seed ______ have a flower.
A. don’t B. doesn’t C. isn’t
( )4. We ______ have a garden.
A. don’t B. doesn’t C. hasn’t
( )5. My sunflower ______ have red flowers.
A. don’t B. doesn’t C. isn’t
二、用所给单词的适当形式填空
1. It ______ (not have) a flower.
2. The plant ______ (have) some roots.
3. The carrots ______ (not have) big leaves.
4. My sunflower ______ (have) a big yellow flower.
5. The seed ______ (not have) leaves.
考点 03 can / can’t
People can make oil from the seeds. 人们可以用种子榨油。
I can’t see the roots. 我看不见根。
▸ can 表示“能;会”,后面接动词原形;can’t = can not,表示“不能”。
解析:can 是情态动词,表示“能;会”,后面接动词原形;can’t(= can not)表示“不能”。can 没有人称和数的变化,不论主语是单数还是复数,都用 can。
一、can + 动词原形
can 后面的动词用原形,不加 s。
例句:We can watch it grow. 我们可以看着它生长。
二、can’t 表示“不能”
can’t = can not,表示“不能”。
例句:I can’t see the roots. They grow down. 我看不见根,它们往下长。
三、can 没有三单变化
主语是第三人称单数时,动词要用三单形式(get→gets,have→has),而 can 没有变化,不说 cans。
例句:I can see the tall sunflower. 我能看见高高的向日葵。
⚠ 易错提醒:People can make oil.(√) People can makes oil.(✗) can 后面的动词用原形!
✎ 大显身手
一、单项选择
( )1. People ______ make oil from the seeds.
A. can B. cans C. can’t
( )2. The seed ______ see the sun. It is in the soil.
A. can B. can’t C. isn’t
( )3. Sunflowers ______ be tall.
A. can B. cans C. can’t
( )4. My family ______ water the plant.
A. cans B. can C. am
( )5. We ______ see many flowers in the school garden.
A. can B. cans C. can’t
二、从括号中选出合适的词填空
1. We ______ (can / can’t) watch it grow.
2. I ______ (can / can’t) see the roots. They grow down.
3. The little seed ______ (can / can’t) make oil.
4. People ______ (can / can’t) grow sunflowers.
5. A seed ______ (can / can’t) grow in the soil.
考点 04 名词复数:leaf → leaves
The plant has some green leaves. 植物有一些绿叶。
The yellow flower has a lot of seeds. 黄花有许多种子。
▸ leaf 的复数是 leaves,f 结尾的名词变复数时,f 变 v 再加 es。
解析:名词变复数时,一般直接加 s;以 f 结尾的名词,f 变 v 再加 es。a lot of 后面接复数名词,表示“许多”。
一、一般名词直接加 s
seed → seeds,flower → flowers,root → roots,plant → plants。
例句:There are many plants in the school garden. 学校花园里有许多植物。
二、f 结尾变 ves
leaf 结尾的 f 变 v,再加 es:leaf → leaves。
例句:Look at the leaves. They are yellow. 看这些叶子,它们是黄色的。
三、How many 后接复数
How many 后面的名词用复数。
例句:How many seeds do we have? 我们有多少种子?
⚠ 易错提醒:leaf → leaves(√) leafs(✗) f 结尾的名词变复数要变 ves!
✎ 大显身手
一、单项选择
( )1. The plant has some green ______.
A. leafs B. leaves C. leaf
( )2. The yellow flower has a lot of ______.
A. seed B. seeds C. seedes
( )3. There are many ______ in the school garden.
A. plants B. plant C. plantes
( )4. I can see some yellow ______.
A. flower B. flowers C. floweres
( )5. The little plant has some ______.
A. roots B. root C. rootes
二、连词成句
将所给单词连成完整的句子,写在横线上。
1. has / plant / the / green leaves (.)
____________________________________________________________
2. a / it / has / big yellow flower (.)
____________________________________________________________
3. can / people / make / oil from the seeds (.)
____________________________________________________________
4. doesn’t / it / have / roots (.)
____________________________________________________________
5. seeds / has / sunflower / my / a lot of (.)
____________________________________________________________
参考答案
考点 01
一、B A C B A
二、has have have have has
考点 02
一、A B B A B
二、1. doesn’t have 2. has 3. don’t have 4. has 5. doesn’t have
考点 03
一、A B A B A
二、can can’t can’t can can
考点 04
一、B B A B A
二、1. The plant has green leaves.
2. It has a big yellow flower.
3. People can make oil from the seeds.
4. It doesn’t have roots.
5. My sunflower has a lot of seeds.
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