To make negative sentences in Spanish with regular verbs, you first need to change the verb to the present tense.

Regular Verb Changes:

• -ar verbs: like hablar (to speak)
  Example: Yo no hablo (I do not speak)

• -er verbs: like comer (to eat)
  Example: Tú no comes (You do not eat)

• -ir verbs: like vivir (to live)
  Example: Él no vive (He does not live)

Special (Irregular) Verbs:

Some verbs are a bit different. Here are a couple of examples:

• hacer (to do)
  Example: Ella no hace (She does not do)

• ir (to go)
  Example: Nosotros no vamos (We do not go)

Using "ser" and "estar":

In Spanish, we have two verbs that mean "to be."

• For things that don’t change, we use "ser":
  Example: Ella no es médica (She is not a doctor)

• For things that can change, we use "estar":
  Example: Él no está cansado (He is not tired)

Making Negative Questions:

To form a negative question, just add "no" before the verb:

• Example: ¿Tú no comes? (Are you not eating?)

Matching Adjectives:

Adjectives (the words that describe things) need to match the noun in gender and number:

• Example: La casa no es grande (The house is not big)

• Example: Los coches no son rápidos (The cars are not fast)

To get better at making negative sentences, practice using these patterns!