Simple past grammar

Present simple-----Past simple

Present Continuous-----past continuous

Past Simple----Past perfect Simple

Past Continuous----past perfect continuous

Present perfect simple-----past perfect simple

Present perfect continuous----------past perfect continuous

Future simple------future past

Modal/semimodal

May-----Might

Can----could

Must/have to-------had to

Commands:

(not) To 

Questions:

If/whether+word ordered of sentence

Question word+word ordered of sentence

Expressions change:

Now➝then

Today➝that day

yesterday➝the day before/the previous day

Tomorrow➝the next day/the following day

Tonight➝that night

Next week/month/year➝the following week/month/year

Last night/week/month/year➝the previous night/week/month/year

A day/week/month/year ago➝the day/week/month/year before

This➝that

These➝those

Here➝there

100%-Always

90%-Usually

80%-Normally/generally

70%-Often

50%-Sommetimes

30%-Ocasionally

10%-Seldom

5%-Hardly ever/rarely

0%-Never