时间:2022-12-19 19:51:53 下载该word文档
Must和Haveto
must(无词形变化)
(1)。表"必须","应该","务必"mustnot(mustn't表"禁止","不许","不准","不可以"。Everyonemustattendthelecture.Theworkmustbefinishedassoonaspossible.Youmustn'tlendittoothers.
注;对must问句的回答。-MustIgotherenow?
-Yes,youmust.
-No,you①needn't.②neednot③don'thave(gotto④don'tneedto.
2.must表推测"一定","必定",一般只用于肯定句,亦即用于疑问句和否定不表揣测。
(1)对现在Hemustbeathomenow.Youmustbehungryafterthelongwalk.TheChineselanguagemusthavethelargestnumberofspeakers.(2对进行时。Hemustbesleepingnow(atthattime.
(3)对过去时或完成时。
Itmusthaverainedlastnight.Hemusthavefallenasleep(then.
HemusthavegonetoBeijingyesterday.Shemusthavebeenyoungwhenshegotmarried.
注意其反意问句。
3.must表不可避免的倾向。Allmenmustdie.
4.must表"偏偏","不巧"Mycarmustbreakdown.我的车偏偏坏了。
haveto"不得不"
1.与must的区别(1)must表说话人的主观看法,而haveto表客观需要。比较:Ihavetostopsmoking.(外界压力,客观情况使然
Imuststopsmoking.(主观认为)2.must只有一种形式而haveto有更多的形式haveto,hasto,hadto,willhaveto等等。
IthoughtImustgothere.
3.haveto的疑问,否定均须借助于
do。Doeshehavetogotherenow?
不说Hashetogotherenow?
Hehastogotherenow,doesn
’the?Theworkhastobefinishedbefore10o'clock..
4.must与hadto的差别:hadto还可以表示业已完成或实现的动作(即;动作确实做了)Ihadtostayathomelastnight.
Can
。
1.表"能力"Icanliftthestone.IcanspeakEnglishwhilehecan't.Whocanplaytheviolin?Hegotupearly
yesterdaysothathecouldcatchtheearlybus.could表过去的能力。
注;1。can与beableto表能力时的区别:
①形式上;can有两种形式can与could,而beableto有更多的形式。