-  Go to the circus in place of go to circus

This sentence is in the simple past tense, which is used to describe completed actions in the past. In this sentence, the action of forbidding is in the past tense, and the action of going to the circus is in the infinitive form.

The sentence contains a preposition "to" followed by the base form of the verb "go" which is used in the infinitive form. However, the noun "circus" is a specific place and requires the definite article "the" before it.

Therefore, the correct sentence would be: "His mother forbade him to go to the circus late at night."

Here are some relevant definitions and formulas related to the parts of speech used in this sentence:

• Verb: A word used to describe an action, occurrence, or state of being. In this sentence, the verbs are "forbade" and "go".
• Infinitive: The base form of a verb, typically preceded by "to". In this sentence, "to go" is an infinitive.
• Preposition: A word that shows the relationship between a noun (or pronoun) and other words in a sentence. In this sentence, "to" is a preposition.
• Definite article: A determiner used to refer to a specific noun. In this sentence, "the" is the definite article used before the noun "circus".

In conclusion, the correct sentence should be "His mother forbade him to go to the circus late at night." The error is in Part 3: "to go to circus", where "circus" requires the definite article "the" before it.