jau5 haau6有效
Jyutpingjau5 haau6
Yaleyáuh haauh
Definition
Effective; able to achieve the expected or desired result.
neutraldescriptions
How it's used
Beyond the meaning of being effective, this term is the standard way to describe something as valid or legally binding. It is frequently used in administrative contexts, such as checking if a document, coupon, or ticket has expired. When referring to a person's ability to get things done, people often prefer using 有用 instead.
Examples
This method doesn't seem very effective.
Related words
Common mistake
Learners often confuse this with 有用, but 有效 specifically focuses on the success of a process or the validity of a status, whereas 有用 is broader and refers to general utility or helpfulness.
Grammar color guide
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Grammar guides
- TonesCantonese has six tones, and the tones can change in certain grammatical contexts. Learn the six tones and the rules for tone change.
- Time and datesClock time, days of the week, months, and years. The patterns you need to make plans and talk about when things happen.
- Modal verbsHow to say can, will, may, should, must, and want. The core modal verbs of Cantonese and the differences that trip up beginners.



