<html><head><meta http-equiv="Content-Type" content="text/html; charset=gb2312"><link rel="stylesheet" href="home.css" tppabs="home.css"><link rel="stylesheet" href="eng.css" tppabs="eng.css"></head><body bgcolor="white" text="black" topmargin="10" leftmargin="0" marginwidth="0" marginheight="0"><table width="540" border="0" cellspacing="0" cellpadding="0" align="center" height="15"><tr><td> </td></tr></table><div align="center"><table width="540" border="0" cellspacing="0" cellpadding="0"><tr><td colspan="3" class="p2" width="760"><b>21.6 表示推测的用法</b></td></tr><tr><td height="254" width="20"> </td><td height="254" width="520" valign="top" class="p2"><br> can, could, may, might, must 皆可表示推测,其用法如下:<br><br> 1)情态动词+动词原形。<br> 表示对现在或将来的情况的推测,此时动词通常为系动词。<br> I don't know where she is, she may be in Wuhan.<br> 2)情态动词+动词现在进行时。<br> 表示对现在或将来正在进行的情况进行推测。<br> At this moment, our teacher must be correcting our exam papers.<br> 这时,我们老师想必在批改试卷。<br><br> 3)情态动词+动词完成时。<br> 表示对过去情况的推测。<br> We would have finished this work by the end of next December.<br> 明年十二月底前我们很可能已完成这项工作了。<br> The road is wet. It must have rained last night.<br> 地是湿的,昨天晚上一定下雨了。<br><br> 4)情态动词+动词的现在完成进行时。<br> 表示对过去正在发生事情的推测。<br> Your mother must have been looking for you.<br> 你妈妈一定一直在找你。<br><br> 5)推测的否定形式,疑问形式用can't, couldn't表示。<br> Mike can't have found his car, for he came to work by bus this morning.<br> 迈克一定还没有找回他的车,因为早上他是坐公共汽车来上班的。<br><br> 注意:could, might表示推测时不表示时态,其推测的程度不如can, may。<br></td></tr></table></div></body></html> |