初中英语常见情态动词的用法 一、can could 的用法 ① 表示能力,意思是“能,能够,会”
can 表示现在的能力时,既可表示做某桩具体事情的“能力” ,也可泛指一般的 能力(《新编英语语法教程》,可用于肯定句,否定句,疑问句等句中
例如: * He can speak English
(一般的能力) * I can climb this cliff(峭壁)
(具体的事情) * Is there anything I can do for you
(具体的事情) * She can’t play the piano
(一般的能力) * He can drive a car
(一般的能力) * He is only four,but he can read
(一般的能力) (注) ○ can 表示现在的“能力” 时,也可以用be able to ,即把 be able to 用为一 般现在时,二者可通用,但 can 用得较多
如: * I can/ am able to swim
* As I have enough money,I can /am able to help her
○ 表示将来的能力常用will /shall be able to 表示
例如: *Iwill be able to speak German in another two months
* If he doesn’t apply soon,he won’t be able to get the job
但若表示现在决定将来是否有能力做某事,则可用 can
例如: * Can you come to the party tomorrow
你明天能来参加我们的聚会吗
* We can discuss that later
* I’m too busy today,