情侣动漫头像.doc

情态动词考点复习
情态动词是一种本身有一定的词义,表示说话人的情绪、态度或语气的动词,但不能单独作谓语,只能和其他动词原形构成谓语。
情态动词无人称和数的变化,情态动词后面跟的动词需用原形,否定式构成是在情态动词后面加“not”。个别情态动词有现在式和过去式两种形式,过去式可以用来表达更加客气、委婉的语气,时态性不强,可用于过去,现在或将来。
猜测: must, may, might, can, could
must只能用于肯定句,非常肯定的猜测
may只能用于肯定句,表示可能的猜测
can只能用于否定/疑问句,过去时用could
should 表示预测“应当”
can, could, may, might, must 表示判断的用法比较
1. The light is on in the office now, so there _______be someone in it, isn’t there?
2. I’m not sure whether he e today. He ____________be ill today.
3. Tom has gone to Beijing, so you ______ see him in our school now.
must
may/might
can’t
shall和will的比较
比较内容
肯定句
疑问句
shall
表示“威胁”、“警告”、“允诺”的语气
与第一、三人称连用,表示征询对方的意见
Will/would
1)表示“习惯”
2)表示“愿意/望”
3)表示“必然性”
与第二人称连用,表示征询对方的意见
1. If you ________follow my advice, I _____offer you some help.
2. ______you meet him right now or ____ he wait outside, sir?
will
shall
Will
shall
need和dare作行为动词或情态动词的比较
比较内容
是否有人称和数的变化
是否借助于助动词
搭配
行为动词
有
是
+to do sth./sth.
情态动词(否/疑)
没有
否
do sth.
can和be able to的比较,以及must和have to 的比较
people ___________ __send their children to school before liberation.
2. Joe was an excellent swimmer, so he _____________swim back to the bank when the ship sank.
3. It snowed heavily last night, so I ---
get up early to sweep the snow in the yard.
4. Every student ______ obey the school rules and e a good student in every way.
could/were able to
was able to
had to
m