Identifying Grammatical Errors in Sentences

The question asks us to find the part of the given sentence that contains a grammatical error. The sentence is:

"He is such an untruthful man, that no one will believing him."

We need to examine the provided options, which are different parts of this sentence, to find the one that violates a rule of English grammar.

Analyzing the Sentence Parts for Grammatical Correctness

Let's look at each option:

• Option 1: will believing him
• Option 2: He is such
• Option 3: that no one
• Option 4: an untruthful man,

We will check each part in the context of the whole sentence to see if it is grammatically sound.

Understanding the Error in "will believing him"

Let's focus on Option 1: "will believing him". This phrase uses the modal verb "will" followed by the verb form "believing".

In English grammar, modal verbs such as 'will', 'can', 'should', 'would', 'may', 'might', 'must', etc., are typically followed by the base form of the main verb. The base form is the simplest form of the verb, without any endings like -ing, -ed, or -s.

The verb "believing" is the present participle form (or gerund form) of the verb "believe". The base form of the verb is "believe".

Therefore, the correct structure after the modal verb "will" should be the base form "believe". The phrase should be "will believe him", not "will believing him". This indicates a clear grammatical error in this part of the sentence.

Assessing Other Sentence Parts

Let's quickly examine the other options to confirm their correctness:

• Option 2: "He is such". This is a standard opening for a sentence structure using "such... that...", correctly introducing the subject and verb for this construction.
• Option 3: "that no one". This introduces the dependent clause indicating the result or consequence of the preceding statement ("He is such an untruthful man"). This structure is grammatically correct in this context.
• Option 4: "an untruthful man,". This is a noun phrase describing the subject "He". It is correctly formed with the article "an", the adjective "untruthful", and the noun "man". The comma before the "that" clause is also appropriate in this specific structure ("such a/an X, that Y").

Only Option 1, "will believing him", contains a grammatical error related to the verb form used after a modal verb.

Conclusion: Identifying the Grammatical Error

The grammatical error lies in the phrase "will believing him". The correct phrasing requires the base form of the verb after "will", which is "believe". The sentence should correctly read: "He is such an untruthful man, that no one will believe him."

Revision Table: Modal Verbs and Verb Forms

Additional Information: Importance of Base Form After Modals

Using the base form of the verb after modal verbs is a fundamental rule in English. It ensures that your sentences are grammatically sound and clearly convey meaning regarding possibility, obligation, or future action. Failing to use the base form, for example, by using the -ing form (like "will believing"), is a common grammatical error that makes sentences sound incorrect and unnatural to native speakers. Mastering the use of modal verbs with the correct verb form is a key step in improving English fluency and accuracy.