write a complete formulae (if there is any ), how to use them when and where to use them give atleast 5 examples [Note : use easy english wording for class 4 ] Usage of tenses

Sure, I can help with that. Tenses are used in English to talk about the time of an action or state of being. Here are the three main tenses we use:

1. Present Tense: We use this tense when the action is happening right now, or when it happens regularly. The formula is: Subject + Verb (base form) + Object. For example, "I play soccer."

2. Past Tense: We use this tense to talk about an action that has already happened. The formula is: Subject + Verb (past form) + Object. For example, "I played soccer."

3. Future Tense: We use this tense to talk about an action that will happen in the future. The formula is: Subject + will/shall + Verb (base form) + Object. For example, "I will play soccer."

Here are some more examples:

1. Present Tense: "She reads a book every night." (This is something she does regularly.)
2. Past Tense: "They went to the park yesterday." (This is something that has already happened.)
3. Future Tense: "We will have dinner at 7pm." (This is something that will happen in the future.)

Remember, the subject of a sentence is who or what is doing the action, the verb is the action, and the object is who or what is receiving the action.