Unit 1 Animal friends（易错题专项练习·语法提升）英语外研版三起三年级下册（新教材）

Unit 1 Animal friends 专题01 语法提升·易错题专项训练 高频易错点03 特殊疑问句（What are they?）的用法 高频易错点01 可数名词单复数的用法 高频易错点02 be动词（am/is/are）的用法 高频易错点、易错点提示、小练笔、答题点拨 易错精讲 可数名词单复数的用法 高频易错点01 易错精讲 可数名词是可以计数的名词，有单数和复数两种形式。 1.可数名词单数形式：表示一个人或事物，通常直接用名词原形（前面可加a/an修饰）。 eg: a dog 一只狗 - an elephant 一头大象（以元音音素开头的可数名词单数前用an） 2. 可数名词复数形式：表示两个或两个以上的人或事物，变化规则如下： ①一般情况下，在词尾加s。cat - cats；book - books - ②以s、x、ch、sh结尾的，加es。box - boxes；bus - buses；watch - watches - ③以“辅音字母 + y”结尾的，变y为i再加es。city - cities；baby - babies - ④部分不规则变化（本单元重点）： - animal - animals；panda - pandas；elephant - elephants；tiger - tigers；giraffe - giraffes；monkey - monkeys 易错点提示 1.不定冠词a/an的用法区别： a用于辅音音素开头的可数名词单数前，an用于元音音素开头的可数名词单数前，不能直接修饰复数名词。 eg:正确：an elephant；a tiger - 错误：a elephant；an tiger；a pandas 2.复数名词前不能加a/an，但可以加some（一些）、many（许多）等修饰。 eg: 正确：some pandas；many tigers - 错误：some panda；a many elephants 3. 注意名词复数的发音：清辅音后读/s/（如cats /kæts/）；浊辅音和元音后读/z/（如dogs /dɒɡz/、elephants /ˈelɪfənts/）；s、x、ch、sh结尾的复数读/ɪz/（如boxes /ˈbɒksɪz/）。 小练笔 单项选择。 ( )1. I see ______ elephant in the zoo. A. a B. an C. / ( )2. There are three ______ in the picture. A. panda B. pandas C. pandes ( )3. Tom has two ______. They are cute. A. dog B. doges C. dogs ( )4. —What are they? —They are ______. A. giraffe B. giraffes C. giraffe's ( )5. There is ______ tiger and some monkeys in the forest. A. a B. an C. some 用所给单词的正确形式填空。 1.Look at those ______ (elephant). They are big. 2.I have five ______ (cat) at home. 3.There are many ______ (monkey) in the zoo. 4.This is ______ (a) panda. It's black and white. 5. —How many ______ (tiger) can you see? —Two. 点拨 选择题答案及解析 1.B elephant是以元音音素开头的可数名词单数，前面用an，故选B。 2.B three表示三个，后面接可数名词复数，panda的复数是pandas，故选B。 3.C two后接可数名词复数，dog的复数是dogs，故选C。 4.B问句中are提示答句用复数形式，giraffe的复数是giraffes，故选B。 5.A tiger是可数名词单数，且以辅音音素开头，前面用a，故选A。 填空题答案及解析 1.elephants those（那些）后接可数名词复数，elephant的复数是elephants。 2.cats five（五）后接可数名词复数，cat的复数是cats。 3.monkeys many（许多）后接可数名词复数，monkey的复数是monkeys。 4.a panda是以辅音音素开头的可数名词单数，前面用a。 5.tigers how many（多少）后接可数名词复数，tiger的复数是tigers。 be动词（am/is/are）的用法高频易错点02 易错精讲 be动词表示“是”，根据主语的人称和数不同，分为am、is、are三种形式，本单元主要用于描述动物的特征和身份。 1.用法口诀： 我（I）用am，你（you）用are，is连着他（he）、她（she）、它（it）；单数名词用is，复数名词全用are。 2.具体应用： (1)I am a student. 我是一名学生。（主语是I，用am） (2)You are my friend. 你是我的朋友。（主语是you，用are） (3)It is a panda. 它是一只熊猫。（主语是单数动物it，用is） (4)They are elephants. 它们是大象。（主语是复数动物they，用are） (5)The tiger is strong. 这只老虎很强壮。（主语是单数名词the tiger，用is） (6)The pandas are cute. 易错点提示 这些熊猫很可爱。（主语是复数名词the pandas，用are） 1.主语是单数动物（如a panda、the elephant）时，用is； 2.主语是复数动物（如pandas、two tigers）或they时，用are，不能混淆。 eg: 正确：The monkey is small. / The monkeys are small. - 错误：The monkey are small. / The monkeys is small. 3.疑问句中，be动词要提前到句首； 4.否定句中，在be动词后加not（is not=isn't，are not=aren't）。 eg: 疑问：Is it a lion? 它是一只狮子吗？/ Are they giraffes? 它们是长颈鹿吗？ 否定：It isn't a bear. 它不是一只熊。/ They aren't tigers. 它们不是老虎。 小练笔 单项选择 ( )1. —______ it a panda? —Yes, it is. A. Am B. Is C. Are ( )2. The elephants ______ big and strong. A. am B. is C. are ( )3. I ______ a student. I like animal friends. A. am B. is C. are ( )4. —Are they tigers? —No, they ______. They are cats. A. isn't B. aren't C. not ( )5. The chameleon ______ small. It can change colour. A. am B. is C. are 用be动词（am/is/are）的适当形式填空。 1.This ______ a dog. It ______ cute. 2.—Who ______ you? —I ______ Tom. I like pandas. 3.They ______ giraffes. They ______ tall. 4.The lion ______ not short. It ______ strong. 5.—______ those elephants? —Yes, they ______. 点拨 选择题答案及解析 1.B主语it是单数，一般疑问句中be动词用is，故选B。 2.C主语the elephants是复数，be动词用are，故选C。 3.A主语I对应的be动词是am，故选A。 4.B主语they是复数，否定回答用aren't，故选B。 5.B主语the chameleon是单数，be动词用is，故选B。 填空题答案及解析 1.is；is。this（这个）后接单数，用is；it（它）对应is。 2.are；am。主语you用are；主语I用am。 3.are；are。they（它们）用are，后一句主语仍是they，继续用are。 4.is；is。主语the lion是单数，否定形式用is not=isn't，后一句用is描述特征。 5.Are；are。those（那些）后接复数，一般疑问句用are，肯定回答用are。 特殊疑问句（What are they?）的用法高频易错点03 易错精讲 本单元重点特殊疑问句是“What are they?”（它们是什么？），用于询问复数事物（尤其是动物）的身份，其答句为“They are + 复数名词.”（它们是……）。 1. 句型结构： - 问句：What are they? 它们是什么？ - 答句：They are + 复数动物名词. 它们是……。 - 例句：—What are they? —They are pandas. 它们是熊猫。 2. 拓展： 询问单数动物的身份用“What is it?”（它是什么？），答句为“It is + a/an + 单数动物名词.”（它是……）。 - 例句：—What is it? —It is an elephant. 它是一头大象。 易错点提示 1.区分单数和复数的疑问句式，不能混淆。 询问单数动物：What is it?（不用What are it?） 询问复数动物：What are they?（不用What is they?） 2.答句中，复数动物名词不能漏掉s，单数动物名词前要加a/an。 正确：—What are they? —They are tigers. / —What is it? —It is a monkey. 错误：—What are they? —They are tiger. / —What is it? —It is monkey. 小练笔 单项选择 ( )1. —______ are they? —They are giraffes. A. What B. Who C. Where ( )2. —What is it? —______ a panda. A. It's B. They're C. I'm ( )3. —What ______ they? —They are elephants. A. am B. is C. are ( )4. —What is it? —It's ______ lion. A. a B. an C. / ( )5. —______ are those? —They are monkeys. A. Who B. What C. How 按要求完成句子。 1.They are tigers.（对划线部分提问） ______ ______ they? 2.It is a bear.（对划线部分提问） ______ ______ it? 3.—What are they? —______ ______ pandas. 4.—What is it? —______ ______ ______ elephant. 5.Those are monkeys.（改为一般疑问句并作肯定回答） —______ ______ monkeys? —Yes, ______ ______. 点拨 选择题答案及解析 1.A根据答句“它们是长颈鹿”，可知问句询问“它们是什么”，用what，故选A。 2.A问句询问单数事物“它是什么”，答句用It's，故选A。 3.C主语they对应的be动词是are，问句结构为What are they?，故选C。 4.A lion是以辅音音素开头的单数名词，前面用a，故选A。 5.B询问复数事物“那些是什么”，用what，故选B。 按要求完成句子答案及解析 1.What are划线部分“tigers”表示事物，用what提问，原句中are提前，即What are they? 2.What is划线部分“a bear”表示事物，用what提问，原句中is提前，即What is it? 3.They are问句询问复数事物，答句用They are + 复数名词，故填They are。 4.It is an问句询问单数事物，答句用It is + an（elephant以元音音素开头）+ 单数名词，故填It is an。 5.Are those；they are。原句是复数形式的陈述句，改为一般疑问句将are提前，those不变；肯定回答用Yes, they are. 综合训练 1、 用所给单词的正确形式填空。 1.There are three ______ (elephant) in the zoo. 2.—What is it? —It ______ (be) a panda. 3.The ______ (tiger) are strong. I like them. 4.I ______ (be) a student. My favourite animal is the monkey. 5.Look at those ______ (giraffe). They are tall. 6.—Are they ______ (dog)? —No, they aren't. They are cats. 7.This is ______ (a) elephant. It's big. 8.The chameleon ______ (be) small. It can change colour. 9.How many ______ (monkey) can you see? 10.They ______ (be) not tigers. They are lions. 二、单项选择 ( )1. —What are they? —They are ______. A. panda B. pandas C. pandes ( )2. ______ is a dog. ______ is cute. A. It；It B. They；They C. It；They ( )3. —Is it a lion? —No, it ______. It's a cat. A. isn't B. aren't C. not ( )4. I see ______ tigers in the picture. They are strong. A. a B. an C. some ( )5. The pandas ______ black and white. They are cute. A. am B. is C. are ( )6. —What ______ it? —It's a chameleon. A. am B. is C. are ( )7. There are many ______ in the forest. A. monkey B. monkeys C. monkeyes ( )8. —Are those elephants? —Yes, ______ are. A. it B. they C. them ( )9. This is ______ giraffe. ______ is tall. A. a；It B. an；It C. a；They ( )10. —What are ______? —They are tigers. A. this B. that C. those 三、句型转换 1. They are pandas.（对划线部分提问） ______ ______ they? 2. It is a lion.（改为一般疑问句并作否定回答） —______ ______ a lion? —No, ______ ______. 3. The elephants are big.（改为否定句） The elephants ______ ______ big. 4. This is a monkey.（改为复数句） ______ ______ ______. 5. Those are tigers.（对划线部分提问） ______ ______ those? 6. The giraffe is tall.（改为一般疑问句并作肯定回答） —______ the giraffe ______? —Yes, ______ ______. 7. It is an elephant.（改为复数句） ______ ______ ______. 8. These are dogs.（改为单数句） ______ ______ ______ dog. 9. The monkeys are in the zoo.（对划线部分提问） ______ ______ the monkeys? 10. They are cute pandas.（改为感叹句） ______ ______ pandas! 四、补全对话 A. What are they? B. Is it a panda? C. They are so cute. D. Yes, they are. E. No, it isn't. A: Look at my picture! B: Wow! So many animals. 1. ______ A: They are pandas. B: 2. ______ Do you like pandas? A: Yes, I do. And look at that animal. 3. __ B: 4. ______ It's a bear. A: Oh, right. And are those tigers? B: 5. ______ They are strong. 五、从方框中选择合适的词补全短文 are, is, a, an, pandas, tigers, elephants, cute, strong, tall Hello! I'm Lucy. I like animal friends. Look! This is 1. ______ zoo. There are many animals in it. There are two 2. ______. They are big and 3. ______. They have long noses. There are some 4. ______. They are black and white. They are 5. ______. I like them very much. There are also three 6. ______. They are 7. ______ and fast. What's that? Oh, it 8. ______ 9. ______ giraffe. It 10. ______ very tall. I love the zoo! 参考答案 1、 用所给单词的正确形式填空 1.elephants 2.is 3.tigers 4.am 5.giraffes 6.dogs 7.an 8.is 9.monkeys 10.are 2、 单项选择 1.B 2. A 3. A 4. C 5. C 6. B 7. B 8. B 9. A 10. C 三、句型转换 1. What are 2. Is it；it isn't 3. are not 4. These are monkeys 5. What are 6. Is；tall；it is 7. They are elephants 8. This is a 9. Where are 10. What cute 四、补全对话 1. A 2. C 3. B 4. E 5. D 五、从方框中选择合适的词补全短文 1. a 2. elephants 3. strong 4. pandas 5. cute 6. tigers 7. strong 8. is 9. a 10. is 第 1 页 共 14 页 学科网（北京）股份有限公司 $