Unit 3 课本知识预习+巩固练习（导学案）新四年级英语暑假自学课（沪教版·新教材）

四年级上册暑假自学课（沪教版） Unit 3 How do we use numbers? 单元知识整合 一、必会词汇 plus 加；加号 equal 等于 answer 答案 minus 减；减号 use 使用 help 帮助 count （按顺序）数数 thing 东西；事物 say 说 二、重点短语 odd numbers 奇数 even numbers 偶数 count things 数东西 every day 每天 how many 多少 the answer is 答案是 三、核心句型 1. —How many apples do we have? —We have ten apples. 2. Two plus three equals five. 3. Five minus two equals three. 4. Numbers help us count things. 四、重难点突破 01 奇数与偶数的区分 解析：奇数是不能被2整除的整数（如1, 3, 5, 7, 9等），偶数是能被2整除的整数（如2, 4, 6, 8, 10等）。判断一个数是奇数还是偶数，可以看它能否被2整除，或者看个位数是否为0, 2, 4, 6, 8。 例句：2, 4, 6, 8, 10 are even numbers. 2, 4, 6, 8, 10是偶数。 1, 3, 5, 7, 9 are odd numbers. 1, 3, 5, 7, 9是奇数。 【提分练01】 选择：Which is an even number? A. 3 B. 5 C. 8 02 加减法表达中equal的用法 解析：表达加法用"数字 + plus + 数字 + equals + 答案"，表达减法用"数字 + minus + 数字 + equals + 答案"。plus表示"加"，minus表示"减"，equals表示"等于"，也可以用is代替equals。 例句：Two plus three equals five. 2加3等于5。 Five minus two equals three. 5减2等于3。 【提分练02】 选择：Three plus four ______ seven. A. is B. are C. am 03 How many...? 询问数量 解析：how many用于询问可数名词的数量，后面接可数名词复数。回答时可以用"We/They/I have + 数字 + 名词"或直接说"数字"。 例句：—How many apples do you have? 你有多少个苹果？ —I have five apples. 我有5个苹果。 【提分练03】 对画线部分提问：We have ten books. __________________________________________ 巩固练习 一、情景选择（每小题2分，共10分） ( ) 1. 你想问同学有多少支铅笔，你会说： A. How much pencils do you have? B. How many pencils do you have? C. How old are you? ( ) 2. 你想表达3加4等于7，你会说： A. Three plus four is seven. B. Three minus four is seven. C. Three plus four are seven. ( ) 3. 你想表达10减3等于7，你会说： A. Ten plus three equals seven. B. Ten minus three equals seven. C. Ten and three is seven. ( ) 4. 你想说2, 4, 6, 8是偶数，你会说： A. 2, 4, 6, 8 are odd numbers. B. 2, 4, 6, 8 are even numbers. C. 2, 4, 6, 8 are numbers. ( ) 5. 你想问答案是什么，你会说： A. What is the answer? B. Where is the answer? C. Who is the answer? 二、单项选择（每小题2分，共10分） ( ) 1. —______ apples do you have? —I have six. A. How much B. How many C. How old ( ) 2. Two plus three ______ five. A. is B. are C. am ( ) 3. 1, 3, 5, 7 are ______ numbers. A. odd B. even C. big ( ) 4. Six minus two ______ four. A. equal B. is C. are ( ) 5. Numbers help us ______ things. A. use B. count C. help 三、选词填空（每小题2分，共10分） odd even plus minus count ( ) 1. Two, four, six, eight are ______ numbers. ( ) 2. Five ______ three equals eight. ( ) 3. Ten ______ four equals six. ( ) 4. One, three, five are ______ numbers. ( ) 5. We can ______ the apples. 四、按要求完成句子（每小题2分，共10分） 1. I have five books.（对画线部分提问） ________________________________________________? 2. Three plus two equals five.（改为一般疑问句） ________________________________________________? 3. 2, 4, 6, 8, 10 are even numbers.（改为否定句） ________________________________________________. 4. Seven minus three equals four.（对画线部分提问） ________________________________________________? 5. We have eight apples.（用How many提问） ________________________________________________? 五、阅读理解（每小题3分，共15分） Numbers are important. We use numbers every day. They help us count things. We use numbers to tell the time. We use numbers when we go shopping too. There are odd numbers and even numbers. 1, 3, 5, 7, 9 are odd numbers. 2, 4, 6, 8, 10 are even numbers. We can use plus and minus. Two plus three equals five. Six minus four equals two. ( ) 1. We use numbers to ______ things. A. help B. count C. use ( ) 2. We use numbers when we ______. A. go to school B. go shopping C. go home ( ) 3. 1, 3, 5, 7, 9 are ______ numbers. A. odd B. even C. big ( ) 4. Two plus three equals ______. A. four B. five C. six ( ) 5. Six minus four equals ______. A. two B. three C. four 参考答案 【提分练01】 1. C解析：8能被2整除，是偶数。 【提分练02】 2. A解析：表示"等于"用equals或is，这里主语是算式，用单数is。 【提分练03】 3. How many books do you have? 解析：对数量提问用How many。 巩固练习参考答案 一、情景选择：1. B 2. A 3. B 4. B 5. A 二、单项选择：1. B 2. A 3. A 4. B 5. B 三、选词填空：1. even 2. plus 3. minus 4. odd 5. count 四、按要求完成句子： 1. How many books do you have? 2. Does three plus two equal five? 3. 2, 4, 6, 8, 10 are not even numbers. 4. What is the answer? 5. How many apples do you have? 五、阅读理解：1. B 2. B 3. A 4. B 5. A 第 1 页 共 6 页 学科网（北京）股份有限公司 $