Question

How long ago you (come) here?

Answer 1

How long ago did you come here:

• Here, If you ask how long ago, you would get the answers with a number and a time unit, like one year, one week, etc.

• Use of ‘did’ and past participle of verb can't be used together because it's grammatically incorrect. So “How long ago did you come here?” is the correct one.

• Some of the very common mistakes that many people make often is “I didn't know that.” which is grammatically incorrect and it really annoys me when some people talk that way.

• Similarly, in the present tense, either does or verb+s form is used. Both ‘does’ and verb+s forms can't be used. For instance, “He doesn't go to college” is the incorrect. “He doesn't go to college.” is grammatically correct.

• The interrogative sentence i.e “how long ago did you come here” is the correct one because the “did” is the helping verb that is already made in the past sentence and there is no requirement for the verb’s second form with “come” to make it past.

• Rule says: how +did+subject+verb(1) form+object+?

• Hence “how long ago did you come here?” is correct.

Answer 2

Answer:

The sentence correction would be How long ago you came here?

Explanation:

• Here, If you ask how long ago, you would get the answers with a number and a time unit, like one year, one week, etc.

• Use of ‘did’ and past participle of verb can't be used together because it's grammatically incorrect. So “How long ago did you come here?” is the correct one.

• Some of the very common mistakes that many people make often is “I didn't know that.” which is grammatically incorrect and it really annoys me when some people talk that way.

• Similarly, in the present tense, either does or verb+s form is used. Both ‘does’ and verb+s forms can't be used. For instance, “He doesn't go to college” is the incorrect. “He doesn't go to college.” is grammatically correct.

• The interrogative sentence i.e “how long ago did you come here” is the correct one because the “did” is the helping verb that is already made in the past tense and there is no requirement for the verb’s second form with “come” to make it past.

Rule says: how +did+subject+verb(1) form+object+?

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