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【动词第三人称变化规则】
动词第三人称变化规则
1回答
2020-06-07 17:59
【动词第三人称变化规则】
动词第三人称变化规则
名词的复数变化规律
主语单三人称时的动词变化
①在
中,当主语为
时,动词要用“s”型(即
形式).
②所谓动词“s”型的构成,可按名词变复数的规则来记,即:
i)在动词尾直接加s.如:
play—plays,want—wants,work—works,know—knows,help—helps,get—gets
ii)以字母s、x、ch或o结尾的动词加-es;如:
guess—guesses,fix—fixes,teach—teaches,brush—brushes,go—goes,do—does,watch—watches,catch—catches
iii)以
+y结尾的动词,先变y为i,再加-es.如:
study—studies,carry—carries,fly—flies,worry—worries
③④强调如何将主语是
的
变为否定和疑问句.现举例说明(用划线部分来说明
):
1)Hismotherworksinafactory.
Hismotherdoesn’tworkinafactory.
Doeshismotherworkinafactory?
2)MrLiteachesusEnglish.
MrLidoesn’tteachusEnglish.
DoesMrLiteachyouEnglish?
3)Mybrotherstudiesmathswell.
Mybrotherdoesn'tstudymathswell.
Doesyourbrotherstudymathswell?