1) We have to get up at 7 o'clock every day.
2) Mary has to go to school by bus, so she leaves home at 8 o'clock.
3) Yesterday I had to get ready for my English exam.
4) Last week my friends had to stay at school after classes.
5) Tomorrow he will have to go to bed at 9 o'clock.
1. His parents have never enjoyed travelling by sea. - Present Perfect
By that time his parents had already enjoyed travelling by sea. Past Perfect
By Christmas his parents will have enjoyed travelling by sea. - Future Perfect
2. Susan has never travelled by train. - Present Perfect
Susan had travelled by bus. - Past P. (=Perfect)
By the end of the month Susan will have travelled by train. - Future P
3. Her friends have just travelled by bus round Europe. - Present P
By that time her friends had just travelled by bus round Europe. - Past P.
By the end of the week her friends will have travelled by bus round Europe. - Future P.
4, They have just arrived. - Present P.
By that time they had already arrived. - Past P.
They will have arrived by the end of the week. - Future P.
Tom is older than Boddy.
Lorry is the youngest child.
Temirlan is taller than Ademy
Kanat is the shortest child.
English is more interesting than Kazakh.
Russian is most boring subject.
Music is more boring than PE.
Math is most interesting subject.
1) have been writing, had been writing, will have been writing.
2) have been living, had been living, will have been living.
3) have been making, had been making, will have been making.
4) have been examining, had been examining, will have been examining.
5) have been gathering, had been gathering, will have been gathering.