“couldhave＋v－ed形式”表示轻微的责备，意思是“过去本来能够”。11．Ido
tmi
dtelli
gyouwhatIk
owYou________Im
otaski
gyouforitA．must
tB．may
otC．ca
tD．
eed
t答案：D题意：“我不介意告诉你我所知道的事。”“没有必要。我并没有问你。”解题关键是最后一行，“Im
otaski
gyouforit我没有要求你讲”，因此你“不必告诉我”。must
t表示“不许；禁止”；may
ot表不允许，语气较轻；ca
t表示能够；
eed
t表需要，用于否定句和疑问句。12．Catheri
eIhaveclea
edtheroomforyouTha
ksYou________itIcouldma
ageitmyselfA．
eed
tdoB．
eed
thavedo
eC．must
tdoD．should
thavedo
e答案：B“
eed
thave＋v－ed形式”表示“过去没有必要”，“Icouldma
ageitmyself”表明没有必要帮助把房间打扫干净。13．Ithasbee
a
ou
cedthatca
didates________remai
i
theirseatsu
tilallthepapershavebee
collectedA．ca
B．willC．mayD．shall答案：D句意为“据通告，考生在收卷前必须坐在自己的座位上。”shall用于第二、三人称时，表示说话人的意图、命令、决心等。14．MrWhite________at830forthemeeti
gbuthedid
tshowupA．shouldhavearrivedB．shouldarriveC．shouldhavehadarrivedD．shouldbearrivi
g答案：A“shouldhave＋过去分词”表示“本来应该做而没有做的事情”。15．Iofte
seelightsi
thatemptyhouseDoyouthi
kI________reportittothepoliceA．shouldB．mayC．willD．ca
答案：A本句理解为“你觉得我向警方报告如何？”表示“应该”这种语气应用should。Ⅱ选择正确的情态动词1．Ireallythi
kyou________shouldcouldvisittheThreeGorgesDamItsreallyfasci
ati
g2．I________hadtoshouldshowthecaptai
mytraveldocume
tswhe
Iarrived3．ImafraidI________could
tca
tstaymoretha
threedaysI________havetoca
retur
towork
extMo
day4．It________willca
beagreattripbecausetherearesoma
yi
teresti
gthi
gstosee5．We________ca
tcould
tseethemou
tai
peaksbecauseitrai
edheavilyeveryday6．There________wo
tca
tbema
ypeopleo
theboatbecauseItsatradi
gship答案：1should2hadto3ca
thaveto4will5could
t6wo
tⅢ词语辨析
f用must
t和do
tdoes
thaveto填空1．Ido
twa
ta
yo
etok
owitYou________tella
yo
e2．Ica
stayi
bedtomorrowmor
i
gbecauseI________gotowork3．Whateveryoudoyou________touchtheswitchItsveryda
gerous4．Thereisalifti
thebuildi
gsowe________climbthestairs5．You________forgetwhatItoldyouItsveryimporta
t6．You________beagoodplayertoe
joyagameofte
is答案：1must
t2do
thaveto3must
t4do
thaveto5must
t6do
thavetor