memory动词
-居里夫人的小故事
2023年2月15日发(作者：惠特曼草叶集)牛津版沪教版英语八年级
(上)Unit7Memory语法讲解+练习+答案
Unit7Memory
语法讲解：条件状语从句，if…not=unless
由引导词if或unless引导的状语从句叫做条件状语从句。
在英文中，条件是指某一件事情实现之后（状语从句中的动
作），其它事情（主句中的动作）才能发生，通常译作“假如”。
从句的位置可在主句之前或之后（从句在前，一般需要用逗号
与主句分隔）。
一、if引导的条件状语从句
条件状语从句最常用的引导词是if（连词）。
（1）主现从现
构成：主句（一般现在时态）+if从句（一般现在时态）
用法：讲述自然规律，肯定会发生的事情或客观事实。例
如：
Ifyoutakeafishoutofwater,itdies.如果把鱼从水中拿出，
它会死。
Ifyouputapieceofpaperintowater,itgetswet.如果你把一
张纸放进水中，它会变湿。Ifyouputsaltintowater,it
disappears.如果你把盐放入水中，它会消失。Ifyouheatice,it
turnsintowater.如果你加热冰块，它会变成水。
Steamturnsintowaterifyoucoolit.如果你冷却水蒸气，它
会变成水。
Oilfloatsifyoupouritonwater.如果你把油倒入水中，它
会漂浮。
（2）主将从现、主祈从现、主情从现
组成：主句（普通未来时态、祈使句、神态动词）+if从
句（普通目前时态）用法：评论未来大概会产生的情形。比方：
①I’llbuyacarifIhaveenoughmoney.假如我有充足的钱，
我会买一辆车。Theywon’tgooutifitrainsheavilytomorrow.假
如明世界大雨，他们不会外出。②Becarefulwhenyoucross
theroad.过马路时要谨慎。
Putupyourhandifyouhaveanyquestionstoask.如果你们
有问题要问的话，请举手。③IfIgetthereearly,Icanseethe
doctorquickly.如果我早早地到那里，我就可以快点看病。You
cangetgoodgradesifyoustudyhard.如果你努力研究，你会取
得好成绩。注：
if指导的前提状语从句，偶然还可由when，assoonas
（一…就…），（not）…until（直到…才）等指导的工夫状
语从句来交换。
Iwillgohomeassoonasitstopsraining.=
Iwillgohomeifitstopsraining.雨一停我就回家。
Pleasedon’tleavetheofficeuntilyour
friendcomesback.=
Pleasedon’tleavetheofficeifyourfrienddoesn’tcomeback.
请不要离开直到你朋友回来。Thetrafficmuststopwhenthe
lightsarered.=
Thetrafficmuststopifthelightsarered.当红灯亮时，交通
必需截止。
二、unless引导的条件状语从句
unless=if…not除非，假如不。例如：
Let'sgooutforawalkunlessyouaretootired.=
let'sgooutforawalkifyouarenottootied.=
Unlessyouaretootired,let'sgooutforawalk.=
Ifyouarenottootied,let'sgooutforawalk.
我们出去散步吧，除非你太累了。
Youwillfailtoarrivethereintimeunlessyoustartearlier.=
Youwillfailtoarrivethereintimeifyoudon’tstartearlier.=
Unlessyoustartearlier,youwillfailtoarrivethereintime.=
Ifyoudon’tstartearlier,youwillfailtoarrivethereintime.
假如你不早点启碇，你就不克不及实时赶到那儿。
Unlessitrains,thegamewillbeplayed.=
Ifitdoesn’train,thegamewillbeplayed.=
Thegamewillbeplayed,unlessitrains.=
Thegamewillbeplayed,ifitdoesn’train.
除非下雨，比赛将照常进行。
Mybabysisternevercriesunlesssheishungry.=
Mybabysisternevercriesifsheisn’t
hungry.=
Unlesssheishungry,mybabysisternever
cries.=
Ifsheisn’thungry,mybabysisternevercries.
我mm不会乱哭，除非她饿了。
Unit7Memory
语法练习
一．用if或unless填空
1._________hewantstoseeme,youcantellhimtowait.
2._________itsnowstomorrow,we'llhaveadayortwooff.
'tgotohisparty_________heinvitesus.
uretopasstheexamination_________sheisill.
5.I'lltakethatcomputer_________Ihaveenoughmoney.
6._________mygrandmawearsglasses,shecanseebetter.
'tbuythatbackpack_________itcostslessthan￥20.
8._________I'mtired,I'llhavearestfortea.
二．用所给词的精确方式填空
___________(get)alowmarkinthetest,he
___________(study)___________(swim)every
daythissummer,you___________(be)
___________(nothurry),he___________(notsee)thebeginning
'tgooutunlessyou___________(finish)
yourhomework.
Isavemymoneycarefully,I___________(notbe)
___________(notrain)tomorrow,we
___________(go)tothepark.
___________(return)totheschool,I___________
(let)youknow.
_____________(feel)tired,you______________
(have)__________he_________(see)the
filmifhe______________(have)time?e_________(be)
fewertrees,there____________(be)
_________(dress)morecasuallyifhe____________(notwork)
ia_______(live)alone,she
____________(keep)apetparrot.
__________(buy)anewdressiftheoldone
_________(be)ns____________(fight)if
they__________(argue).
15.I___________(have)abakesaleifI_________(need)
_________(send)meabeautiful
souvenirifhe__________(tour)
____________(say)Iamhard-working,myparents_________
(feel)glad.18.I___________(go)tothebeachif
it_____________(notrain)thisweek.19._________they
__________(have)r_________(be)
busy?_________(write)alettertohisgrandparentsifhe
_______(get)___________
(get)uplate,she__________(notcatch)
_________(major)inEnglishifhe_________(pass)theexamsin
PekingUniversity.
_____totheparty,you’llhaveagreattime
llfather_____us
fromJapan?
_____thewater,it
_____intogas.
,,il,il,
willturn4.I____hertheanswerifshe____me.
l,ll,willask
5.–Whatareyougoingtodotomorrow?
--We’llgotothelibrarytomorrowifit____.
’’’train
ell,ll,asks6.—Doyouknowwhenhe
willcomebacktomorrow?
--Sorry,Idon’____back,I’lltellyou.
llyou
doifyou_____totheoldfolk’shomevisit?
8.I’llgivethebooktohimif
he___herenextSunday.
____an
Englishfilminourschooltomorrow.
10.
Whenmymotherreturnedlastnight,I____abook.
gtoread11.I
won’leavehereuntilhe____back.
12.I’llwakeyouup
whenhe____back.
lcome
tohelpusifshe____toobusytomorrow.
’’dhisphone
number,I____you.
ld15.____youdon’tgoto
bedearlier,youwillfeeltiredtomorrow.
16.—It’sraining,Daisy.
Please________anumbrellawithyou.
--Thanks.I’llreturnittoyouwhenI____nextweek.
;;;;will
come17.I’llgoforawalkwithyouifit________tomorrow.
’’ns
A．
________hertotheparty,soshewasveryhappy.
________’dbettercallhimlater.
________
carefully,you________thereportwell.
sten;sten;understand
;;understand
’llgoswimmingiftheweather____finetomorrow.
don’tleave
theofficeuntilyourfriend____back.
!
Someone____inthenextroom.
ttell
himthenewsassoonasyou____him.
clubisfor
’tgoin____B.
27.I’mwaitingformyfriend.____,I’llgo
shoppingalone.
oesn’
shedidn’tstudyhardifyou______wanttofail
theexam.
’’’'startassoon
asourteacher______.
ohome
fortheholidayassoonasI______myexams.
ed四．按要求完
成下列句子。
A.不改变句子意思，重新改写下列句子
ingyouupifIfinishmywork.
I____________ringyouup____________Ifinishmywork.
’llbelateforschoolunlessyouleavenow.
You’llbelateforschool____________you____________
leavenow.
’llhaveabarbecueifitisfinetomorrow.
We____________haveabarbecue____________itisfine
tomorrow.
ammeltsunlessyouputitinafridge.
Icecreammeltsifyou____________putitinafridge.
I____________leaveschool____________Ipasstheexam.
goforapicnicunlessitrainstomorrow.
If____________________________________tomorrow,
wewillgoforapicnic.B.翻译以下句子。
1.如果你作业做完了就可以回家了。
Ifyou_________________________yourhomework,you
cangohome．
2.长大后我想成为一位教师。
Iwillbea____________whenI____________
______________.
3.如果明天不下雨的话，我们将参观公园。
Wewillvisitthepark_____________it_______________
tomorrow.
4.如果他回来了，请告诉我一声。
Please__________meifhe_________________________.
5.假如你累了，就好好苏息一会儿吧。
Haveagoodrest__________youare__________
6.如果他到的晚了会发生什么事情？
What_________________________ifhe_____________
late?
7.如果努力研究，你就会取得好成绩。
Ifyou_________________,you_________________good
___________.
8.他如果看电视太久了，他的父母会不高兴。
Ifhe_________TVtoomuch,hisparents_____________
_________unhappy.9.假如我们为他构造华诞集会，人人都市来
的。
Everyone___________________tifwe___________a
birthdayparty____________him.10.如果明天不下雨，我会和
你一起去公园的。
Ifit___________________tomorrow,I
_________gotothepark__________you.11.假如
她睡着了，路程就会早退的。
She____________________________
__________thetripifshe_________
__________.12.假如他有空，他会匡助你的。
Ifhe__________________,he___________________you.
13.如果Tom考试不及格，他就没有机会上高中了。
Tom__________havethe_________togotothehighschool
ifhe____________theexams.14.你如果抄同学的作业就不能学
好各门功课。
You_______________goodatallthesubjectsifyou
__________theotherstudents’homework.
Unit7Memory
语法练习答案
一．用if或unless填空
1、If
2、If
3、unless
4、unless
5、if
6、If
7、unless
8、If
二．用所给词的正确形式填空
,willstudy
,willbe
'thurry,willnotsee
tbe
'train,willgo
s,willlet
,willhave
,see,has
,is
ess,doesn'twork
,willkeep
y,is
ght,argue
ve,need
nd,tours
,willfeel
,doesn't
,have,is
ite,gets
,willnotcatch
jor,passes
1-5CBADD
6-10AABCC
11-15BCBCB
16-20ABABC
21-25CABCA
26-30CABAB
四．按要求完成下列句子。
A.不改变句子意思，重新改写下列句子
't,unless
,don't
t,unless
't
't,unless
n'train
B.翻译下列句子。
nished
r,growup
,rains
,comesback
,tired
ppen,comes