作者:杨春吉
情态动词是历届中考的重、难点之一。 同学们在复习备考时要注意以下三点: 1. 从句式角度进行分类复习。2. 利用对比法进行复习。3. 注意近年来中考情态动词的新考点的复习和运用。现就历届中考的几个重点、难点作一讲述。
[考点一] can / could ; may / might; must 表推测的用法
[考点点拨] (1)can / could 表示推测的用法时,意为"可能",常用于疑问句、否定句,could表示推测时,不表示时态,其程度不如can。
(2)may / might 表推测时,用在肯定句中,意为"可能; 也许",might此时也不表示时态,其推测程度弱于may。
(3)must 表示很有把握的"一定",用于肯定句。
[考题回放] 1. Tom ___ be in Shanghai. Because I saw him just now. (2003 上海)
A. shouldn't B. mustn't C. may not D. can't (答案为D)
2. Return home quickly. Your parents ______ be worrying about you now. (2004 重庆)
A. can B. would C. must D. could
(答案为C)
[考点二] can 与be able to 的区别与运用
[考点点拨] can 可以表示能力及可能性,它没有人称和数的变化; be able to 除了表示能力外,还可以表示"经过一番周折干成某事", 它有人称和数的变化。can只有现在式和过去式,而be able to可用于各种时态。
[考题回放] 3. He was a clever student. So he ______work out the problem at last. (2002安徽)
A. could B. would C. might D. was able to (答案为D)
[考点三] used to与would的区别及运用
[考点点拨] 二者均可表示"过去常常"之意, 但would 常表示过去的习惯动作,而不表示过去的状态, 且没有与现在对比的含义。used to 表示"过去常常......(而现在已不如此)",它既可以表示动作,也可以表示状态,强调过去与现在的对比。
[考题回放] 4. He said there ______ be a hospital here. (2003黑龙江)
A. would B. used to C. must D. can (答案为B)
5. When he was there , he ______ go to that coffee bar after work every day. (2001青海)
A. should B. would C. had better D. might (答案为B)