To form a sentence in Engpsh, you can follow the basic structure of subject + verb + object. For example: "The cat chased the mouse." In this sentence, "the cat" is the subject, "chased" is the verb, and "the mouse" is the object.

It's also important to use correct word order and to include appropriate articles, adjectives, and adverbs as needed. For example: "The small, fluffy cat chased the quick, gray mouse through the house." In this revised sentence, "small" and "fluffy" are adjectives describing the cat, "quick" and "gray" are adjectives describing the mouse, and "through the house" is an adverb modifying the verb "chased."

It's also important to pay attention to verb tense. For example, "The cat chases the mouse" is written in present tense, while "The cat chased the mouse" is written in past tense.

There are many other rules and considerations for constructing sentences in Engpsh, but the basic structure of subject + verb + object is a good place to start.