Final answer:
The negative formal command for 'seguir' in the ustedes form is 'no sigan', created by using the present subjunctive form of the verb.
Step-by-step explanation:
The negative formal command for the verb seguir when addressing 'ustedes' (plural formal 'you' in Spanish) is 'no sign'. To form this command, you use the present subjunctive form of the verb. Here is the step-by-step process to form it:
- Start with the 'yo' form of the present indicative, which for 'seguir' is 'sigo'.
- Drop the 'o', leaving you with 'sig-'.
- For seguir, an -ir verb, add the opposite vowel ending '-an' for ustedes to form 'no sigan'.
- The final negative formal command is 'no sigan', which means 'do not follow' or 'do not continue'.