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(完整版)高中英语语法教案
高中英语语法教案
TeachingGoals:
1.ToenableSstoknowaboutthewaytoexpresspossibilityandimprobability.
2.ToenableSstomastertheusageof“may”,“might”,and“likely”.
3.TohelpSslearnhowtousemodalverbs“may”and“might”toexpressconjecture.
TeachingProcedures:
Step1.Revision
ChecktheanswerstotheVocabularyexercisesintheWorkbook.
Step2.Function
1.AskSstodoActivity1onpage54andcallbacktheanswers.Thengivethemthecorrectanswers.
2.AskSstoidentifythecreaturesinthepicturesinActivity4onpage55,byusing“may”or“might”.Arousetheirinterestintalkingaboutpossibility.
3.AskSstodoActivity2onpage54individually.Thenchecktheiranswers.
Step3.Grammar
1.Leading-in
AskSstoworkingroupsanddiscussthequestioninActivity1ofGrammaronpage57.Thengivethemtherightanswer.
2.Explanation
Explainhowtousemodalverbstotalkaboutsomethingwhichhappenedinthepast—perhaps.
(1)对过去的事情进行猜测，但把握较小时，肯定形式一般用mayhavedone，否定形式一般用maynothavedone。如：
Hemayhavegonebackhome,becausehedidn’tsayhewouldtakepartinherbirthdayparty.
Hemaynothavepaidforthebill,becausehehadlosthisjob.
(2)对过去的事情进行猜测，但把握更小时，肯定形式一般用mighthavedone，否定形式用mightnothavedone。如：
Theyhelpedsendherbattothehospital;otherwise,shethought,thebabymighthavedied.
ShemightnothavelefthomewhenIgottoschool.
(3)对过去的事情进行猜测，并且可能性较大时，肯定形式一般用musthavedone，否定形式一般用can’thavedone。如：
Yourscoreisthehighest;youmusthavestudiedveryhard.
Youcan’thaveseenherinherofficelastFriday;she’sbeenoutoftownfortwoweeks.
3.Practice
AskSstodoActivity2onpage57.Thencallbacktheanswersandcorrectthem.
4.Supplements
Explainhowtousemodalverbstotalkaboutsomethingwhichhappenedatpresent—perhaps.
用来表猜测的情态动词有：must,can,may等，但它们所表示可能性是不同的。
(1)对现在的事情进行猜测，并且可能性较大时，肯定形式一般用must加动词原形，此时，must不再表示“必须”，而是表示“肯定”；否定形式一般用can’t加动词原形，此时，can不再表示“能够”，而是表示“肯定不……”。如：
Isawhimgooutjustnow.Hecan’tbeinhisownroom.
ItmustbeLindaintheclassroom,becausesheisondutytoday.
(2)对现在的事情进行猜测，但把握较小时，肯定形式一般用may加动词原形，此时，may不再表示“可以”，而是表示“可能”；否定形式一般用maynot加动词原形。如：
Hemaytellthetruthtohisfather.
Shemaynotangrybecausesheisgood-tempered.
(3)对现在的事情进行猜测，但把握更小时，肯定形式一般用might加动词原形；否定形式一般用mightnot加动词原形。如：
Shemightnotbeangrybecausesheusuallyisverypatient.
Hemightbeathomenow,butI’mnotsure.
(4)情态动词+动词现在进行时，表示对现在或将来正在进行的情况进行推测。如：
Atthismoment,ourteachermustbecorrectingourexampapers.
DoctorWangisn’there.Hemightbegivingalectureinthehall.
(5)情态动词+动词的现在完成进行时，表示对过去正在发生事情的推测。如：
Yourmothermusthavebeenlookingforyou.
Thelightwasonthewholenight.Hemayhavebeendoinghishomeworkallthetime.
5.Consolidation
AskSstotranslatethefollowingsentences.
(1)他们也许错过了那班飞机。
(2)快点！他们正在机场等我们。
(3)Tom是个诚实的孩子。他今晚可能会把真相告诉他父亲。
(4)他五年前来看过我，他也许不费劲就能找到我的住处。
Step4.Homework
1.AskSstoreviewGrammar.
2.AskSstofinishGrammarexercisesintheWorkbookpages97~98.
