小学英语第三人称单数专题讲解PPT优秀课件.ppt

小学英语专项小学英语专项------一般现在时的第三一般现在时的第三人称单数人称单数I often/usually/sometimes…一般现在时一般现在时经常性、习惯性的发生的动作经常性、习惯性的发生的动作What do you often do on the weekend? play football watch TV cook Chinese food study English do homeworkI often play football.He often plays football. I often cook Chinese food.He often cooks Chinese food. I often watch TV.He often watches 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，谓语动词时，谓语动词要用第三人称单数形式，即要用第三人称单数形式，即常在动词原形后加常在动词原形后加-s或或-es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 reads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 watch teach wash go watches teaches washes goes I often study English.He often studies English.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 fly studies flies I often do homework.He often does homework.I often have an English class.He often has an English class.4.不规则变化动词不规则变化动词have → do → has doesDo you often play football?Yes, I do.No, I don’t.Yes, he does.No, he doesn’t.Does he often play football?I often play football.Do you often play football?He often plays football.Does he often play football.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，时，疑问形式？？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 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.I often play football.I don’t often play fooball.He often plays football.He doesn’t 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 doesn’t watch TV.2.He often cooks Chinese food.He doesn’t often cookk Chinese food.对比变化对比变化I often play football. I don’t often play football.Do you often play football? He often plays football.He doesn’t often play football.Does he often play football?。