新人教必修3unit1festivalsaroundtheworld[情态动词课件](2)内容摘要：
种倾向“总是 ,总要” used to表过去常常（现在已没有这种习惯）“过去常常” used to 可与状态动词连用 would不可以 eg. He used to be a quiet boy. ( ) He would be a quiet boy. ( ) √ will/would If you will help me with my English, I will be very happy. I promised that I would do my best. You shall do as I say. (命令 ) ,shall用于二、三人称表示允诺、警告、命令、决心等。 Shall I open the window for you。 （征求意见） ,用于一、三人称，用来表示请求或征求意见。 shall ,should 和 ought to Tell him that he shall have the book tomorrow. (允诺 ) Nothing shall stop me doing it. (决心 ) Shall he fetch some water for you。 （请求） Young people should learn how to use puters. 3. should常表示劝告、建议、命令，与 ought to意义相近，但 ought to多表示责任、义务，语气强烈。 Every citizen ought to obey law. You ought。阅读剩余 0%
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