Question

They has not changed his decisions (Correct the sentence)​

Answer 1

Answer:

They has not changed his decisions : Correct the sentence

• The given incorrect sentence has been said to correct.

• So the right sentence is 'They didn't change their decision.'

• The correct sentence is an example of past Indefinite Tense.

• It is a negative sentence of past indefinite tense.

• Structure of Past Indefinite Tense : 'Subject + main verb 's past form + object ' _ it is restricted for affirmative sentence. Example : He wrote me a letter. Here 'wrote' is past form of 'write ( present form )' and its past participle form is 'written'

• But past indefinite tense has also an auxiliary verb and it is 'did'.

• Did is used to make negative ( He did not see the match ) , interrogative ( Did you take rice ? ) and interrogative - negative sentence : Did they not come ?

• When did is used as a helping verb, main verb's present form is always used. For Interrogative Sentence 'did' is always used first.

Answer 2

They have not changed their decisions.

Explanation:

• There are two ways to correct this sentence.
• Either it can be "They have not changed their decisions".
• Or they didn't change their decisions.
• the above sentence can be written both in the present perfect and simple past tense.
• The correct sentence is given above.
• This sentence belongs present perfect tense.
• The sentence structure of present perfect tense is  
• Subject + have / has + 3rd form of the verb + object