V+唔到

1. Basic Structure
To express that an outcome cannot be achieved, place 唔 (m4) directly inside the verb-complement compound:

• Verb + 唔 + 到 (dou2)

Examples include:

• 搵 (wan2, 'look for') → 搵唔到 (wan2 m4 dou2, 'cannot find')
• 聽 (teng1, 'listen') → 聽唔到 (teng1 m4 dou2, 'cannot hear')
• 買 (maai5, 'buy') → 買唔到 (maai5 m4 dou2, 'cannot manage to buy / unable to buy')

2. Tone of 到 (dou2)
The character 到 normally carries tone 3 (dou3) when used as a main verb ('to arrive'). As a potential result complement in V + 到, it usually changes to tone 2 (dou2). However, for the phrase 估唔到, there is a distinction: when used as an adverbial or conjunction meaning 'unexpectedly', it is traditionally pronounced with tone 3 (gu2 m4 dou3), though tone 2 (dou2) is common today. When it literally means 'unable to guess', it is strictly pronounced with tone 2 (gu2 m4 dou2). Additionally, when 到 is used as an extent or degree complement (e.g., V + 到 meaning 'so much that...'), it is pronounced with tone 3 (dou3).

3. Placement of Objects
Direct objects usually follow the entire pattern or are fronted to the beginning of the sentence as a topic:

• 我搵唔到副眼鏡。(ngo5 wan2 m4 dou2 fu3 ngaan5 geng2 - 'I can't find my glasses.')
• 啲飛我買唔到。(di1 fei1 ngo5 maai5 m4 dou2 - 'The tickets, I couldn't get them.')

Crucially, when the object is a pronoun, Cantonese frequently places it between the verb and the complement (unlike Mandarin). For example:

• 搵佢唔到 (wan2 keoi5 m4 dou2 - 'cannot find him/her')
• 睇你唔到 (tai2 nei5 m4 dou2 - 'cannot see you')

4. Affirmative Counterpart and Questions
In everyday Cantonese, the standard affirmative counterpart to express successful achievement is simply Verb + 到 (dou2) (e.g. 搵到 wan2 dou2 'able to find / found'). Forms like 搵得到 (wan2 dak1 dou2) are also used.

Note that while the bare affirmative form V到 can be ambiguous, speakers often use aspect markers (like 咗 zo2 or sentence-final 喇 laa3) to clarify the resultative meaning ('managed to V / found it'), and modal verbs (like 可以 ho2 ji5) to clarify the potential meaning ('can V / able to find it').

To ask whether an outcome can be achieved, use the V + 唔 + V + 到 question structure:

• 搵唔搵到？ (wan2 m4 wan2 dou2? - 'Can you find it?')
• 睇唔睇到？ (tai2 m4 tai2 dou2? - 'Can you see it?')

5. Structural Restrictions & Key Distinctions
Potential result structures like V + 唔 + 到 express inherent capability or outcome possibility. Aspect markers like 咗 (zo2) cannot combine with this potential structure (*睇唔咗到 or *睇唔到咗 are ungrammatical).

This 'V + 唔 + Complement' structure also applies to other result complements besides 到, such as 聽唔明 (teng1 m4 ming4, 'cannot understand') or 食唔落 (sik6 m4 lok6, 'cannot swallow/eat').

Do not confuse this pattern with past factual non-occurrence, refusal, or prohibition:

• 睇唔到 (tai2 m4 dou2): Cannot manage to see it (inability/result constraint).
• 冇睇到 (mou5 tai2 dou2): Did not see it (past factual non-occurrence).
• 唔睇 (m4 tai2): Do not look / will not look (refusal/habitual).
• 唔好睇 (m4 hou2 tai2): Do not see/look (prohibition).

Finally, it is important to distinguish V唔到 from V唔得:

• 食唔到 (sik6 m4 dou2): Cannot manage to eat it (e.g., it's sold out, or it is out of reach).
• 食唔得 (sik6 m4 dak1): Cannot be eaten / not allowed to eat (e.g., it's poisonous, or you are allergic).