'May' is a modal verb that is used to talk about possibilities, permissions, express wishes, etc. 'May' is mainly used in formal contexts. Take a look at the following examples:

'Will' is a modal verb that is mainly used to talk about the future. It is also used to predict and talk about habits. For example:

We use 'may' and 'will' to make offers. Offers are statements that show our willingness to do something for someone. Note that 'may' is followed by first-person singular or plural pronoun (I and we). We use 'may' to make polite and formal offers. For example:

As shown in the table below, 'may' and 'will' are used as conditional verbs. conditionals are used to show that the occurrence of an event depends on another event or action to happen.

'May' and 'will' are used in conditional type 1. In this type, we show a condition and the results that follow. These conditions are real situations with a high chance of occurrence. For example:

Modal verbs are used to create negative or interrogative sentences. When creating negative sentences, we add 'not' to the modal verb as illustrated below:

Here are some examples to illustrate the process of negation:

To create questions, we invert the modal verbs with subjects as illustrated below:

We use 'may' to give and ask for permission. To ask for permission, we use 'I' or 'we' after 'may.' Take a look at the following dialogue for clarity:

We use 'will' to talk about forecasts, possible future events, and predictions. For instance:

'May' is also used to talk about present or future possibilities. For example:

We use 'will' to talk about routine actions that occur in the form of habits. For instance:

We use 'may' at the beginning of the sentence to express wishes, hopes, condolences, and prayers. For example: