中考英语含助动词句型精讲优选资料

1、中考英语含助动词句型精讲7must have V-ed结构：主词 +must have+过去分词说明：此句型意为一定曾经。本句型 是对过去之事做肯定之推测，而must+原形 动词 是对目前或将来之事做推测。Anyway, he must have eaten a lot because now he is fat.无论如何，他一定吃了很多东西，因为现在他胖了You must have mistaken her for her sister. 你一定是把她误认为是她的姊妹了They must have left. 他们一定是离开了The rubbing must have worked. 搓揉一

2、定是有效了They must have read the article. 他们一定读过这篇文章。You must have seen him before. 你以前一定见过他He must have forgotten my name. 他一定忘了我的名字He must have told you about it. 他一定告诉过你这件事。Tom must have taken your dictionary by mistake. 汤姆一定是弄错了才拿了你的字典The poet must have been very young when he wrote this poem. 诗人写这首

3、诗时一定非常年轻。. may have V-ed .结构：主词+may/might have+过去分词说明：此句型意为“很可能曾经。表示对过去之事做不太肯定的推测。而may/might+原形 动词是对现在或未来事物做推测。 might have 所表示的可能性要比 may have 低一些。He may have overslept this morning. 今天早上他或许睡过头了The tea is hot; he may have been here before. 茶还热着，不久前他很可能在这里He may have known the truth; otherwise he woul

4、dnt be so angry now.他当时很可能知道事情的真相，否则他不会这么生气The boy might have known the truth, but I am not quite sure.这男孩当时也许知道真相，但我不很确定。. cannot have V-ed .结构：主词 +ca nnot have+过去分词说明：此句型意为不可能曾经。是对过去之事做否定的推论，此时一定要用cannot have 或cannot,不能使用 must not have 或 must not。而cannot+原形 是对目前或将来之事做否定的推论。She cannot have written the letter herself. 这封信不可能是她自己写的He is honest, so he cannot have stolen my money. 他是个老实人，所以他不可能偷了我的钱。He cannot have caught a cold, b