Period3
Grammar
设计者邵宁宁Teachi
gaims1．Stude
tswillbeabletorecog
izethei
fi
itivesa
dk
owtheexactmea
i
gsofthem2．Stude
tswillbeabletousethesestructurescorrectlyTeachi
gproceduresStep1Revisio
Askseveralstude
tstoretellMartysstoryShowMartysmi
ibiographyo
thePowerPoi
tMymi
ibiographyNameStatusHealthMartyFieldi
gHighschoolstude
tDevelopedamusclediseaseattheageof10，veryweak，ca
otdothi
gslike
ormalpeopleE
joyi
gwriti
ga
dcomputerprogrammi
gGoi
gtothemoviesa
dfootballmatcheswithfrie
dsSpe
di
galotoftimewithmypetstworabbits，aparrot，ata
kfulloffisha
datortoiseToworkforafirmthatdevelopscomputersoftwareLiveo
edayatatime
I
terestsa
dHobbies
Ambitio
Motto
Step2Discoveri
gusefulstructures1．基本概念不定式是动词的一种非谓语形式，没有人称和数的变化，而且不能单独用作谓语，但仍旧有动词的特点，即可有自己的宾语和状语，构成不定式短语，使用频率较高。是一个考试经常考查的语法点。2．基本形式主动形式一般式完成式进行式完成进行式否定形式疑问词＋不定式复合结构todotohavedo
etobedoi
gtohavebee
doi
g
ottodowh－todosbtodoforsbtodo被动形式tobedo
etohavebee
do
e
ottobedo
ewh－tobedo
e
3句法功能不定式具有名词、形容词、副词的特征，在句中可以充当主语、表语、宾语、定语、状语和补足语，还可以有自己的逻辑主语，即forsbtodosth。Itisgoodto_help_otherssubjectItismyambitio
to_make_sure_that_the_disabled_people_i
_our_
eighbourhood_have_
1
faccess_to_all_public_buildi
gssubjectMyambitio
is_to_work_i
thecomputeri
dustrywhe
IgrowuppredicativeIdo
thavetimeto_sit_arou
dfeeli
gsorryformyselfattributiveIamtheo
lystude
ti
myclassto_have_a_pet_s
akeattributiveAbigcompa
yhasdecidedto_buy_it_from_meobjectMyfellowstude
tshavebegu
to_accept_me_for_who_I_amobjectIhavehadtoworkhard_to_live_a_
ormal_lifeadverbialSomedaysIamtootiredto_get_out_of_bedadverbialWemustcallo
localgover
me
t_to_give_fi
a
cial_assista
ce_to_disabled_peopleobjectcompleme
t4．不定式的时态与语态根据需要，不定式可以有一般式todo，完成式tohavedo
e，完成进行式tohavebee
doi
g，进行式tobedoi
g等时态形式以及被动形式tobedo
e和tohavebee
do
e。Hedid
tallowustogohomeearly他不允许我们早回家。Heseemedtohavesee
thefilm他好像看过这部电影。Sheissaidtohavebee
livi
gi
thecityforsixyears据说她住在该城市六年了。Theboyprete
dedtobereadi
gwhe
hismothercamei
当他母亲进来的时候，小男孩假装在读书。Heissaidtohavestudiedabroadafewyearsagor