Question

he did this job till 2015. change into negative form​

Answer 1

The sentence in the negative form is:

He did not do this job till 2015.

• The given sentence is affirmative. Affirmative sentences are the ones used to agree to some facts.
• Such sentences can be converted into negative form by addition of negative words like 'do not', 'did not', 'no', etc.
• Negative sentences simply states that a given fact is false.
• Other examples-

1. Ravi is going on a trip.

Ravi is not going on a trip.

2. He likes roses.

He doesn't like roses.

Answer 2

Positive Sentence :

He did this job until 2015.

Negative Sentence:

He did not do this job until 2015.

Structure of the Positive Sentence :

Subject + Helping verb + Main verb + Object.

Structure of the Negative Sentence:

Subject + Helping verb + "not" + Main verb + Object.

Negative Sentences contain negative words such as -No, not, never, no one, etc.

Some of the examples of positive and negative sentences:

Sheela works in a hospital (Positive)

Sheela does not work in a hospital (Negative)

I like to play basketball (Positive)

I do not like to play basketball (Negative)

You are beautiful (Positive)

You are not beautiful. (Negative)