In Spanish, nouns can be either masculine or feminine. This affects how we use words with them, like articles and adjectives. Here are some important points to remember:

1. Gender of Nouns:

• Masculine nouns usually end with -o. For example, niño means boy.
• Feminine nouns usually end with -a. For example, niña means girl.
• There are some exceptions. For example, el mapa means the map and is masculine, while la mano means the hand and is feminine.

2. Articles:

• We use el for masculine nouns. For example, el libro means the book.
• We use la for feminine nouns. For example, la mesa means the table.

3. Making Nouns Plural:

• If a noun ends with a vowel, just add -s to make it plural. For example, libros means books, and mesas means tables.
• If it ends with a consonant, add -es. For example, mujeres means women.

4. Regular Verbs in the Present Tense:

• For -ar verbs like hablar (to talk), it changes to yo hablo (I talk).
• For -er verbs like comer (to eat), it changes to yo como (I eat).
• For -ir verbs like vivir (to live), it changes to yo vivo (I live).

5. Making Negative Sentences:

• To say something is not true, use no before the verb. For example, No hablo español means I do not speak Spanish.

6. Introduction to Irregular Verbs:

• It's also important to learn some irregular verbs, like ser (to be), estar (to be), and tener (to have), and how they change in the present tense.

By knowing these rules, you’ll be able to create correct sentences and tell if nouns are masculine or feminine in Spanish!