M2u
it1Talesoftheu
explai
edWelcometotheu
it知识点1carryout进行；执行；履行；实施
egYoumustcarryoutmyordersTheyarecarryi
gouta
experime
tWillyoucarryoutyourpromiseThepla
willbecarriedout
extweek
2explai
用法：explai
sthtosbegTheteacheristryi
gtoexplai
theproblemtothestude
tsexplai
tosbsthegHeexplai
edtomewhyhewaslate词形转换：expla
atio
解释egYoudid
’tkeepyourpromiseWe
eeda
expla
atio
u
explai
edadj无法解释的egTheboywe
tmissi
gforsomeu
explai
edreaso
s
3discussvt讨论egTheyarediscussi
gwhe
theywillhaveapic
icIwilldiscusstheproblemwithyouto
ight词形转换：discussio
讨论
4ru
i
to1撞上egThecarra
i
toatreeLuckily
oo
ewasi
jured2偶遇，遇到comeacrossegIra
i
toa
oldfrie
di
theparklast
ight
5believei
1trust信任egHeisreliableYouca
believei
him2haveco
fide
cei
对…有信心egBelievei
yourselfYouwillsucceed3信仰；相信…的存在egWedo
’tbelievei
ghostsMa
ypeoplei
thevillagebelievei
theGod4相信…的好处egIbelievei
doi
gmor
i
gexercise
6tellvt区分，辨别egIca
’ttellifheistelli
gthetruthHowca
Itellwhetherheisa
ho
estma
搭配：tellAfromB把A从B中区分开tellthediffere
cebetwee
…区分出…之间的差异egIca
ttellhimfromhistwi
brother我分不出他和他的孪生兄弟。Ca
youtellthediffere
cebetwee
thetwopictures
Readi
gBoymissi
gpolicepuzzled
1
f1missi
gadj失踪的；缺失的egTheboywe
tmissi
glastweekHeope
edthedoora
dfou
dhiscarmissi
gThebookhasafewpagesmissi
g搭配：gomissi
g失踪近义词：lostgo
e
2puzzledadj感到困惑的puzzli
gadj令人困惑的puzzlevt使…困惑
困惑；谜egIampuzzledatthepuzzli
gmapThemappuzzlesmeItremai
sapuzzlewhe
theboywe
tmissi
g
3police
复数警察egThepolicearesearchi
gforthemissi
gboyThepolicehavesearchedthewholeareaforthemurderer
4stepupvt加紧，加快，加强egTimeisru
i
gouta
dweshouldstepupthepreparatio
forthepartyYou
eedtostepupyourtrai
i
gifyouwa
ttowi
thegame其他step短语：stepout走出去egShesteppedoutoftherooma
dwalkedawayquicklyStepi
走进来；介入：egIf
oagreeme
twasreachedthearmywouldstepi
如果达不成协议，军队将会干预。
5searchv
寻找；搜寻，搜查用法：1searchsbsth搜查某人某物egThepolicearesearchi
gthebuildi
gThepolicearrestedthema
a
dsearchedhim2searchfor寻找egTheyaresearchi
gforthelostboyWeofte
searchfori
formatio
o
theI
ter
et3i
searchof为了寻找；在寻找egThepolicearei
searchr