Optative verbs such as “会”, “能”, “可以”, “应该”, and “要” are often placed before verbs to express ability, possibility, or willingness. Optative verbs such as “会”, “能” and “可以” indicate the ability to do something and can be translated with the English word “can; be able to”.
It should be noted, though, that “会” emphasizes skills acquired through learning, while “能” and “可以” express the possession of skills in general.
Subject | Predicate | ||
OpV | V | O | |
你 | 会不会 | 说 | 汉语? |
我 | 不会 | 打球。 | |
他 | 会 | 写 | 这个汉字。 |
谁 | 会 | 游泳? | |
你朋友 | 能 | 教 | 他英语吗? |
你 | 能不能 | 喝酒? | |
你 | 可不可以 | 帮 | 我? |
“能” and “可以” are also be used to express permission or prohibition under specific circumstances. For example:
Subject | Predicate | ||
TW | OpV | V O | |
我们 | 八点 | 能不能 | 到 那儿? |
我 | 明天 | 不能 | 上 课。 |
(我) | 可以 | 进来 吗? | |
这儿 | 不可以 | 上 课。 |
The optative verb “应该” is used to express needs arising from moral or factual necessity.
Subject | Predicate | |
OpV | V O | |
他 | 应该 | 来 上 课。 |
你 | 不应该 | 去 那儿。 |
Note:
1. In a sentence with an optative verb, the affirmative-negative form (V/A-not-V/A) is formed by juxtaposing the affirmative and negative forms of the optative verb that is OpV-not- OpV.
OpV + 不 + OpV + V O
会 不 会 说 汉语
能 不 能 去
可以 不 可以 介绍
2. The negative form of “能” and “可以” is usually “不能”. “不可以” is also used to express prohibition.
这儿不能吸烟。(No smoking here.)
3. To answer briefly, one may use only the optative verb. For example:
你会说汉语吗?– 不会。
可以进来吗?– 可以。
4. Some of the optative verbs are also general verbs. For example:
他 会 英语。
我 要 咖啡。
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