1. be动词:主语+be(am,is,are)+其它。如: 2.行为动词:主语+行为动词(+其它)。如: 注意:一般现在时经常和频率副词连用。 1. be动词的变化。 动词原形变第三人称单数的规则与发音规律同名词单数变复数大致相同,请认真观察。 1、大多数动词在词尾加“S”在清辅音后发音为[s],在浊辅音及元音后发音为 [z]。如: 2、以辅音字母加“y”结尾的,要先将“y”变为“i”,然后在加“es”读[iz] 如: 3、以“s, x, ch, sh”结尾的,在词尾加“es”,发音为[iz] 如: 4、以“o”结尾的动词,加“es”,读[z] 如: 下面几个动词变为单数时,原词的元音部分的发音发生了较大的变化,请注意记忆。如: be动词包括:am, is, are。第三人称单数用 is;过去式为 was;复数are,过去式为were. have,遇到主语是第三人称单数时,要用 has;动词 be 的第三人称单 提升练习 一、 写出下列动词的第三人称单数 二、用括号内动词的适当形式填空。 点击下方空白区域查看答案 ▼ 一、写出下列动词的第三人称单数 drinks goes stays makes looks has passes carries comes watches plants flies studies brushes does teaches 二、用括号内动词的适当形式填空。 has are don’t watch doesn’t go Do like do do Do read teaches take is 现在进行时表示说话时正在进行或发生的动作,也可表示当前一段时间内的活动或现阶段正在进行的动作. 结构:助动词 be ( am / is / are ) +现在分词. 1.现在进行时的肯定形式、否定形式、疑问形式及其回答,所有变化都体现在助动词 be ( is / am / are ) 上. 1)现在进行时的肯定形式:主语+be(am/ is/are)+doing+其他成分 I am singing . They are writing . 2)现在进行时的否定形式:主语+be(am/ is/are)+not +doing+其他成分 I am not singing . They aren’t writing . 3)一般疑问句及回答:be(am/ is/are)+ 主语+doing+其他成分 Am I singing ? Yes ,you are . / No ,you aren’t . Are they writing ? Yes ,they are . / No ,they aren’t . 4)特殊疑问句及回答:特殊疑问词+be(am/ is/are)+主语+doing+其他成分 What are you doing ? We are playing (要求就提问内容具体回答). 注意: 不是所有动词都能用现在进行时态的,如: see、like、want、know 等动词往往都不用进行时态. 提升练习 1. Look. Lucy is_____ a new bike today. A. jumping B. running C. riding D takeing 2. The children _____ football. A. is playing B. are playing C. play the D. play a 3. They ______TV in the evening. They do their homework. A. are watching B. can't watching C. don’t watch D. don't watching 4. Listen! She____ in the classroom. A. is singing B. sing C .to sing D. is sing 5. ______are you eating? I’m eating ______ meat. A. What,some B. Which,any C. Where,not D. What,a 6. Is she ____ something? A. eat B. eating C. eatting D. eats 7.My dictionary ___,I have looked for it everywhere but still___ it. A. has lost,don't find B. is missing,don’t find C. has lost,haven't found D. is missing,haven’t found. 8..Having a computer for personal use is no easy task because technology ____ so rapidly. A. is changing B. has changed C. will have changed D. will change 9. The building_______ ,I can't stand the noise. A. was being built B. is built C. is being built D. builds 10. I can’t catch up with the fashion,because the clothes style_______ all the time. A. has changed B. is changed C. is changing D. changed 点击下方空白区域查看答案 ▼ 1.C 2.B 3.C 4.A 5.A 6.B 7.D 8.A 9C 10.C |
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