Present Perfect vs. Past Simple

Present Perfect

- action that happened in the past but we don't mention when exactly. I have already seen this film. - action completed a short time ago ( we use JUST ) She's just done her homework. - action that started in the past and continues up to the present Mary's taught Maths since 2010. - action that happened in the past but the results are visile in the present Tom has broken his arm. He can't walk now. - our life experiences We've been to the USA three times in our life.

In Present Perfect we use: - This month - Never - Just - Yet - Lately / recently - Today - Ever - So far - Three times in my life - Since, - For - Already

In Present Perfect we use have / has ans 3rd column of irregular verbs or we add - ed

Past Simple

- action that started and finished in the past I tought Maths in 1999 - past habits or states I took a bus to school every day when I was 10 years old. - a series of completed actions in the past Mike entered his room, took his bag and left the house.

In Past Simple we use: - Yesterday - 2 days ago - Last night - In 1994 - From 2010 to 2020 - The day before

In Past Simple we use 2nd column of irregular verbs or we add - ed