三年级英语下册练习题.doc

三年级英语练习题姓名:_ 班级:_ 成绩：_ 介词的用法： 1、in在里面，季节，早、中、晚 in the lake在湖里 in spring 在春天 in the moring在早上 in the afternoon在下午 in the evening在晚上 2、on 用于星期前, 在上面 on Sunday 在周日 on the desk在桌子上3、at（表示在小地方） 在 at home在家 at school在学校4、 to 向 Happy birthday to you! 祝你生日快乐！5、for 给 Here is a present for you!这是给你的礼物。6、under 在下面 The cat is under the tree.猫在树下。7、behind在后面 The monkey is behind the door.猴子在门后。一、选词填空。on in under for to behind at1. She goes to school _Mondays.2. In summer, he swims _the lake.3. Happy birthday _ you!4. Its warm_ spring.5. The box is_ the door.6. Amy is_ home.7. The cat is_ the tree.8. Here is a present_ you!第三人称单数的用法第三人称：he他 she她 it它 your mother/father你的妈妈/爸爸单个人名(Daming,Amy)，动词要用第三人称单数形式。动词的第三人称单数形式构成规则1. 一般情况下，大多数动词在词尾直接加“s”。playplays swimswims walkwalks likelikes 2. 以“x,ch,sh，o”结尾的，在词尾加“es”.boxboxes watchwatches washwashes gogoes dodoes 3. 以辅音字母加“y”结尾的，要先将“y”变为“i”，然后再加“es”。fly-flies4. 特殊变化：havehas 一、 根据句意，从括号内选择正确的单词填空。1._(Does/Do) she go to school on Saturdays?2.In the morning, he _ (have/has) Chinese and English.3.Mum_(goes/go) shopping on Sundays.4.Daming_(fly/flies) a kite in the park.5.In summer, my brother_(swims/swim) in the lake.6.The cat_(like/likes) fish.7.He_(plays/play) football in autumn.8. In winter, Amy_(walk/walks) in the snow.9.Tom_(doesnt/do