V + 唔 + 得

In Cantonese, the modal complement 得 (dak1) attaches after verbs to express capability, permission, or suitability. The affirmative pattern is V + 得 (e.g., 呢啲嘢食得 ni1 di1 je5 sik6 dak1 = 'This stuff is edible/allowed to be eaten'). To express prohibition or inability, modern Cantonese places the negative particle 唔 (m4) before the verb, forming the pattern 唔 + V + 得.

1. Sentence Structure & Word Order
Unlike the Mandarin equivalent (V + 不 + 得), modern Cantonese places 唔 (m4) before the verb when using the specific modal particle 得 (while other potential complements place 唔 after the verb, e.g., 食唔落), creating a sandwich construction:

• Subject + 唔 (m4) + Verb + 得 (dak1) + (Object)

For example: 呢啲嘢唔食得 (ni1 di1 je5 m4 sik6 dak1) = 'This stuff is unfit to eat.'

Crucial Rule for Verb-Object Compounds: If the verb has an object (like 影相 jing2 soeng2 'take photos'), the object must come after 得. The structure is 唔 + Verb + 得 + Object. For example, 唔影得相 (m4 jing2 dak1 soeng2) is correct, while *唔影相得 is incorrect.

2. Four Key Nuances
Depending on context, 唔 + V + 得 carries four meanings:

• Prohibition / Lack of Permission: 'Not allowed to' (e.g. 呢度唔影得相 ni1 dou6 m4 jing2 dak1 soeng2 - 'You are not allowed to take photos here'; 呢道門唔開得 ni1 dou6 mun4 m4 hoi1 dak1 - 'This door must not/should not be opened').
• Unsuitability / Harmfulness: 'Not fit/suitable to be done' (e.g. 過期嘢唔食得 gwo3 kei4 je5 m4 sik6 dak1 - 'Expired food is not edible').
• Objective Inability / Circumstantial Impossibility: 'Incapable of doing due to physical incapacity or circumstantial impossibility, applying to both people and inanimate objects' (e.g. 隻腳受傷唔行得路 zek3 goek3 sau6 soeng1 m4 haang4 dak1 lou6 - 'Leg is injured, cannot walk').
• Tolerance / Capacity: 'Cannot handle or withstand an action' (e.g. 唔食得辣 m4 sik6 dak1 laat6 - 'cannot handle spicy food'; 呢部手機唔跌得 ni1 bou6 sau2 gei1 m4 dit3 dak1 - 'this phone cannot withstand being dropped').

3. The 'Ready' Nuance and 未 (mei6)
When V + 得 means 'ready to V' (e.g., 食得 sik6 dak1 = 'ready to eat'), it must be negated with 未 (mei6) instead of 唔 (m4). The pattern is 未 + V + 得 (e.g., 未食得 mei6 sik6 dak1 = 'not ready to eat yet'). Using 唔 in this context changes the meaning to 'unfit/forbidden to eat'.

4. Asking Questions and Handling Objects
A common learner error is placing 唔 (m4) directly after the verb (*食唔得) in declarative statements. In Cantonese, 唔 (m4) normally precedes the verb (唔 + V + 得). To ask a question, you can use the A-not-A form V + 唔 + V + 得 (e.g. 食唔食得？ sik6 m4 sik6 dak1?) or attach 得唔得 to the verb (e.g. 食得唔得？ sik6 dak1 m4 dak1?).

Crucial Rule for Questions with Objects: When using the A-not-A question form with a verb-object compound, the object must come at the very end: V + 唔 + V + 得 + Object? For example, to ask 'Can I take photos here?', you say 呢度影唔影得相呀？ (ni1 dou6 jing2 m4 jing2 dak1 soeng2 aa3?). Splitting the verb and object this way is highly specific to Cantonese. Note: A common fossilized exception to the general word order rule is 怪唔得 (gwaai3 m4 dak1 - 'no wonder'), where 唔 appears after the verb.

5. Difference from Resultative Complement Negation
Do not confuse this with resultative potential structures. To clarify the exact boundary of 唔 + V + 得, compare the 'Big Three' ways to say 'cannot eat':

• 唔食得 (m4 sik6 dak1): Focuses on permission, suitability, or tolerance (e.g., you are allergic, it is forbidden, or the food is spoiled).
• 食唔到 (sik6 m4 dou2): Focuses on attainment or successful execution (e.g., it is sold out, or you cannot reach it). This negates the V + 到 pattern.
• 食唔落 (sik6 m4 lok6): Focuses on physical capacity or appetite (e.g., you are too full or feel sick).

To make this distinction bulletproof, consider the verb 買 (maai5 - to buy): 唔買得 (m4 maai5 dak1) means you are not allowed to buy it (e.g., it's restricted), whereas 買唔到 (maai5 m4 dou2) means you couldn't successfully buy it (e.g., it's sold out). These are distinct grammatical constructions.