rewrite:
he usually comes late (is..) -1
he is usually late
he comes to school from time to time . ( occasionally) -2
he occasionally comes to school.
When i was young . I walked to school . ( used to) -3
when i was young, i used to walk to school
when did you start watching the film ? ( how long ...) - 4
how long ago did you start watching the film?
i didn`t travel a broad . (never...) -5
i never travelled abroad.
during the film ,i fell a sleep . (while...) -6
while i was watching the film, i fell asleep.
when i saw ali , i ran away . (on...) -7
on seeing ali, i ran away.
first, i did my home work.then, i watched the film . ( as soon as - before - until -having - no sooner - it was ...) -8
as soon as i had done my work, i watched the film.
Before i watched the film, i had done my homework
i didn't watch the film until i had done my homework
having done my home work, i watched the film
no sooner had i done my home work than i watched the film
it was only when i had done my home work that i watched the film
without money, i couldn`t by a car . (if it ...) -9
if it weren't for money, i coudn't by a car
he isn`t a doctor so he can`t help the poor. (if...) -10
if he were a doctor, he could help the poor
metal expand by heating . (if..) -11
metals expand if they are heated
if he studied hard, he would pass the test. (were...) -12
were he to study hard, he would pass the test
you must work hard . Otherwise,you will fail. (if..) -13
if you don't study hard , you will fail

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