the limits of my language mean the limits of my world. (ludwig wittgenstein)
我语言的局限就是我世界的局限。（路德维希。 维特根斯坦）】
第4讲动词（be动词，实义动词）
part. one【知识梳理】
a.动词分类
b. be动词的用法。
i 用am， you用are,is连着他，她，它，are连着他们，她们，它们和我们。 如：
① i am a studentyou are a teacher. ③my father and mother are workers.
c. 实义动词的基本形式。
英语动词有五种基本形式，即动词原形，三单形式，现在分词和过去式，过去分词。 小学段只要求前四种形式。
动词原形变三单形式（v-s形）的规则：
现在分词（v-ing形）的变化规则：
动词的过去式（v-ed形）的变化规则：
d.动词的时态。
时态体现在动词的不同形式变化上。动词的不同形式变化可以体现这个动作发生的时间。下表简单说明了各个时态动词的不同结构变化：
part. two【课堂练习】
a.按要求写单词。
1.将下列动词变成过去式。
playbeginameatcry
askbuygocomesing
2. 将下列动词变成现在分词。
skateswimdrawshopget
writeh**esitdorun
b. 用be(am/is /are/was/were)动词的正确形式填空。
(1)--whenyou born? -iborn on december 12th.
2) -how oldyou?--itwelve years old.
3) tomorrow willa nice day.
4) my parentswatching tv in the living room.
5) look, theresome children on the playground. a girlflying a kite. two boysrunning.
theyvery happy.
c. 单项选择。
( )1) i __grapes because they are very sweeta. likeb. likingc. likes
( )2) whatyou going to do tomorrowa. willb. arec. am
( )3) mr. brown __noodles yesterday evening. a. cookb. cooksc. cooked
( )4it often __in summera. does; rains b. does; rain c. do; rain
( )5) i __he**y now. i h**e to __more vegetables. a. am; eatsb. is; eatc. am; eat
( )6) tom __me. he is my brothera. looks atb. looks likec. looks on
( )7) let’s stop off and __tim and his family. a. call inb. call upc. call on
( )8) -does she work here? -no. but these days shehere.
a. helpsb. helpc. helping
( )9) -whereyour uncle come from? -hefrom china.
a. is; comeb. are; comesc. does; comes
( )10) -what did you do yesterday
a. i went to a parkb. i was watching tvc. i do my homework.
part. three【课后作业】
a. 用动词的正确形式填空。
1you oftenwatch) tv in the evening? -no, inot).
2. -whatthe twinsdo) now?
---theyhelp) han mei with her english.
3. two plus twobe) four.
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