1、频率副词：频率副词：often/usually/sometimes/never/always/every day(week)经常性、习惯性的发生的动作经常性、习惯性的发生的动作 play football watch TV cook Chinese food study English do homeworkI.Mike Beijing、I often play football.He often plays football.I often cook Chinese food.He often cooks Chinese food.I often watch TV.He often watc
2、hes TV.在一般现在时中，当在一般现在时中，当主语主语是是第三人称单数第三人称单数时，谓语时，谓语动词动词要用第三人称单数形式。要用第三人称单数形式。下面让我们一起来复习动词第三人下面让我们一起来复习动词第三人称单数形式的规则：称单数形式的规则：1.规则变化（共规则变化（共3条）条）2.不规则变化（要牢记）不规则变化（要牢记）1.一般情况下，直接在动词后一般情况下，直接在动词后+s come play like draw read comes plays likes draws readsI.规则变化规则变化:2.以以s,sh,ch,x,o 结尾的动词，在结尾的动词，在词尾词尾+es wa
3、tch teach wash go do watches teaches washes goesdoes I often do homework.He often does homework.3.以以辅音字母辅音字母+y 结尾结尾的动词，的动词，变变y 为为i，再，再+es study flycrytry studies fliescriestries I often study English.He often _ English.studies情况情况词尾变化词尾变化例词例词一般动词一般动词 加加-s play-plays;draw-draws;read-reads;cook-cooks以
4、以“-s,-x,-ch,-sh,-o”结尾的结尾的动词动词 加加-eswatch-watches;teach-teaches;wash-washes;go-goes;do-does以以“辅音辅音字母字母+y”结尾的动词结尾的动词变变y为为i，再加，再加-esstudy-studies;fly-flies;cry-cries;try-tries第三人称单数形式规则变化：第三人称单数形式规则变化：II.不规则变化动词不规则变化动词have hasI often have an English class.He often has an English class.巩固练习题：巩固练习题：I.写出下
5、列动词的相应形式：写出下列动词的相应形式：1.第三人称单数：第三人称单数：wash_ watch _guess_ study_finish_ go_ snow_ carry_have_ washeswatchesguessesstudiesfinishesgoessnowscarrieshaslikesflyingdoesdrawingcleanfinishesislistensvisitwear?一般疑问句Do you often play football?Yes,I do.No,I dont.Yes,he does.No,he doesnt.Does he often play foot
6、ball?I often play football.Do you often play football?He often plays football.Does he often play football?改一般疑问句：改一般疑问句：在一般现在时中，当在一般现在时中，当主语是第三人称单数主语是第三人称单数时，疑问形式？时，疑问形式？当主语为第一二人称时，怎样变成疑问句？当主语为第一二人称时，怎样变成疑问句？I often play football.Do you often play football?句子前加句子前加上上doHe plays football.Does he play
7、football?句子前加句子前加does后后还有什么变化还有什么变化She often watches TV.She often does homework.Does she often watch TV?Does she often do homework?改一般疑问句：改一般疑问句：否定句I often play football.I dont often play fooball.He often plays football.He doesnt play football.在一般现在时中，当主语是第在一般现在时中，当主语是第三人称单数时，否定形式？三人称单数时，否定形式？1.He often watches TV.He doesnt watch TV.2.He often cooks Chinese food.He doesnt often cook Chinese food.改成三单的句子改成三单的句子I often play football.I dont often play football.Do you often play football?He often plays football.He doesnt often play football.Does he often play football?
