Welcome to learning about third person singular verb forms in English. When we have a subject like he, she, or it, we need to change the verb. For example, the verb 'play' becomes 'plays' when we add the letter s.
Some verbs need -es instead of just -s. This happens when verbs end in -o, -sh, -ch, -ss, -x, or -z. For example, 'go' becomes 'goes', 'wash' becomes 'washes', 'watch' becomes 'watches', and 'fix' becomes 'fixes'. The extra 'e' makes these words easier to pronounce.
For verbs ending in y, we have two different rules. If there's a consonant before the y, like in 'study', 'try', or 'cry', we change the y to ies. So 'study' becomes 'studies'. But if there's a vowel before the y, like in 'play', 'enjoy', or 'stay', we just add s. So 'play' becomes 'plays'.
Some verbs are irregular and don't follow the normal rules. The most important ones to remember are: 'have' becomes 'has', 'be' becomes 'is', 'do' becomes 'does', and 'say' becomes 'says'. These irregular forms must be memorized because they don't follow any pattern. They are very common in English, so it's important to learn them well.
Let's review all the rules for third person singular verbs. Most verbs just add -s. Verbs ending in -o, -sh, -ch, -ss, -x, or -z add -es. For verbs ending in consonant plus y, change y to -ies. For verbs ending in vowel plus y, just add -s. And don't forget the irregular verbs that must be memorized. Practice these rules with examples like 'She reads', 'He watches', 'It flies', and 'She has'. With practice, these rules will become automatic!