1.Our Chinese teacher is 66.Oh ,no .She ------over 60,i thin

表猜测时1.无迹象规律型猜测will do.
2.有迹象判断推测be going to do
3. 80%以上程度猜测must do肯定一定必定/can't do不可能,
4. 50%程度猜测may/could do,可能,couldn't do,可能不
5. 30%以下猜测might do也许大概差不多mightn't do
表必须应该1.must do符合主观意志 needn't do没必要
2.have to do违背主观被迫无奈 don't have to do
3.should do建议性应该shouldn't do
4.shall do责任性应该 , shan't do
5.ought to do照规矩,按常理应该.oughtn't (to) do
6.had better do威胁性应该 had better not do
另外：should have done本应该做却没能实现
shouldn't have done本不该做却做了
1.Our Chinese teacher is 66.Oh ,no . She ______over 60,i think .
A. can't be B. shouldn't be
为什么不选B,表示“按常理超过60岁”?
b是建议性不应该,人家岁数你能建议吗?
2.They hurried so that they _____ not miss the bus .
A. might B. should
为什么不选B,表示“按常理不会错过公交”
匆忙只能猜测也许不会误车,而不是你能建议误不误
3.--This ___be Bill's house .It's NO.101
--Oh ,i don't think so .he said his house was a blue one
,but is one is yellow .
A. can B. must
为什么不选A,表示理论上是Bill的家?
有门牌号,猜测很可能是.can do肯定句常表习惯性本能
4.Will you come to my birthday party ?
No ,I_______
A. won't B. can't
为什么不选A?
can't do表猜测不可能或表没能力,做不到.won't do表不愿意
就算你不愿意参加,也不会直接表达吧?

5.where is my pen ?I______it .
A. might lose B. must have lost
为什么不是A,表示“我可能丢了”?
might lose对将要发生的猜测,也许会丢,还不一定丢.must have lost对过去很大程度猜测,肯定已经.
既然找不到了,就已经丢的可能性很大了.
6.Mary is not in her bedroom .She_____in her classroom .
A.should have been B. must have been
为什么不选A,表示“（过去）按常理在她的教室”?
should have been建议应该却没在 must have been猜测很可能在
既然没在卧室,那很可能在教室.注意should do不是按常理而是建议.按常理用ought to do
7."We didn't meet him at the party yesterday" ."He_______it "
A. can't have visited B .should have gone to see .
这题什么意思?
显然是他本应该来看却没来.所以昨天没见到他.