第四课时一、在空缺处填上所缺的英文数字。1. seven + four = __________ 2. six + six = __________3. five + __________ = thirteen 4. five + __________ = fourteen5. seven + eight = __________ 6. seven + __________ = seventeen7. ten + nine =_______________ 8. nine + seven =____________二、翻译短语。1. 十二个学生 __________ 2. 十六个梨______________3. 二十个葡萄__________ 4. 十八个鸡蛋 5. 十五个冰淇淋 ________三、阅读短文，选择正确的答案。My name is Lucy. Im twelve years old. I study in Hong Xing Primary School. Look, this is my classroom. There are twenty desks and twenty chairs. And there are eight fans in my classroom. And we can see three windows and two doors. We can see two blackboards, too.（ ）1. How old is Lucy? A. Eleven.B. Twelve. C. Thirteen.（ ）2. There are ________ desks in the classroom.A. twentyB. twelve C. thirteen（ ）3. There are ________ fans in the classroom.A. nineB. ten C. eight答案一、1. eleven 2. twelve 3. eight 4. nine 5. fifteen 6. ten 7. nineteen 8. sixteen 二、1. twelve students 2. sixteen pears 3. twenty grapes 4. eighteen eggs 5. fifteen ice-creams三、1. B 2. A 3. C