A Sample sentences. We can use different tenses to narrate a story. Past simple The newspapers heard about it. Past continuous It was going really well.

We can use different tenses to narrate a story.

Past simple	The newspapers heard about it.
Past continuous	It was going really well.
Past perfect	We'd tested it for over six months, and there'd been no bad reaction to it.
Present perfect	Since then, we've kept away from skin care products.

B Form

· The Past Simple comprises:

one part in the positive, i.e. V₂/V_ed

two parts in the negative and interrogative, i.e. did + V₁

Positive form	Negative form	Interrogative form
Last year Iworkedin personnel.	At that time he didn't knowthe forecast.	Didthey fillin the form correctly?

· The Past Continuous comprises

two parts: the past tense of to be (was/were)+ V_ing

Positive form	Negative form	Interrogative form
I was checkingthe stock.	We were not/weren't expecting a delivery	What was he doingat this time last year?

· The Past Perfect comprises

two parts: had + V₃/V_ed

Positive form	Negative form	Interrogative form
I had/'d finishedthe project.	You had not/hadn't finishedthe project.	Hadwefinishedthe project?

· The Present Perfect Simple comprises

two parts: has/have + V₃/V_ed

Positive form	Negative form	Interrogative form
Ihave/'ve finishedthe project.	She has not/hasn't finishedthe project.	Havethey finishedthe project?

C Uses

1. The Past Simple is common when we describe a sequence of events or tell a story in chronological order about events that happened in the past.

2. We use the Past Perfect to situate an event that happened before another past event.

3. The Present Perfect is used to describe past events of current significance.

4. The Past Continuous is used to describe unfinished events which were in progress around a particular past time.

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