had start

has started

had started

had saw

had seen

seen

forgot

had forgotten

forgotten

has forgotten

didn't find

hadn't found

had teached

had been teached

had been taught

had been teaching

had been waiting

has been waiting

had been waited

had waited

had been working

have been working

worked

had worked

had looked for

had been looked

had been looked for

had been looking for

take

taken

took

freezen

froze

frozen

have begun

have began

has began

has begun

have you eaten

has you eaten

has you ate

have you ate

have been + Ving

have been + Ved

have/has been + Ving

has been + Ving

has being raining

has rained

has been raining

has been rained

has been singing

has been sung

have sung

have been singing

has been learning

has been learnt

has being learning

has learnt

I will be reading this book

I will have read this book by tomorrow

I go to read the book tomorrow

I won’t Reading the book tomorrow

Do + have + past participle

Will be + verb + ing

Will + have + past participle

Have + past participle

Will be found

Will be founding

Will have found

Will have founding

Will have mastered

Will have been mastered

Will have master

Will have been mastered

will have cleaned

will be cleaning

will have been cleaning

are going to be cleaning

will have been negotiated

will have been negotiating

won't be negotiating

isn't going to negotiate

won't have written

won't been writing

won't have writing

won't have been writing

will have been working

will have worked

will work

will be working