中考英语易错点专项解析
情态动词易错点梳理与练****易错点清单
易错点
解析
例句
can与
be able to
can和be able to表示能力时用法相同,但can只有原形和过去式(could)两种形式,在其他时态中 要用be able to 来表示。另外 be able to 常常指经过努力,花费了时间和劳力之后才能做到某事。
Jim can't speak English. 吉姆不会说英语。
He could speak English at 5. 他五岁时就会说英语。
We'll be able to see him next week. 下星期我们将会见到他。
can与may
(1)can 和 may 均可用来征求意见或许可,意为“可以”, 一般可互换使用。
Can/ May I help you?我能帮助你吗?
(2)can和may 表示可能性时的区别:
1)在肯定句中用 might,may,must,不用can;
2)在疑问句中表示推测用can,不用 might,may,must;
3)在否定句中用can't(不可能),不用 may,must。
She may be in the classroom.她可能在教室里。
Where can they be now?他们现在可能在哪儿?
That can't be true. 那不可能是真的。
may be与maybe
may be中的may为情态动词, be为动词原形,在句中作谓语。而maybe是副词,意思是“大概、也许”,相当于perhaps,常放在句首,作状语。
He may be wrong,but I'm not sure.
也许他错了,但我也不确定。
Maybe she'll come this afternoon.
她可能今天下午来。
can't 与 mustn't
(1)can't 根据其基本用法可译为“不会、不能”
I can't speak English. 我不会说英语。
We can't do it now because it's too dark.
天太黑了,我们现在不能干了。
(2)can't在否定句中表示推测,意思是“不可能”。
The man can't be our teacher because he is much younger than our teacher. 那个人不可能是咱们老师,他年轻得多。
(3)mustn't 意为“ 禁止、不许”, 用来表达命令,表示强烈的语气。
You mustn't play football in the street. It's too dangerous.
你不可以在街上踢足球,太危险了。
must与 have to
must 侧重于个人意志和主观上的必要。have to 侧重于客观上的必要,可用于现在时、过去时和将来时。
I know I must study hard.我知道我必须努力学****My brother was very ill,so I had to call the doctor in the mid-night. 我弟弟病得厉害, 我只得半夜里