present simple
what is the present simple of going?
go
present continuous of talk?
talking
the past tense of talk?
talked
good/..../....
good/better/best
what is used for personal opinions?
use must
present simple of playing
play
present continuous of ride?
riding
the past tense of play?
played
bad/..../
bad/worst
what is used by somebody in authority to say something is necessary?
use have to
present simple of walked
walk
present continuous of read?
reading
the past tense of find?
found
lucky/....
luckier
Which one (have to, must to, should) changes in the third person?
have to
present simple of studying?
study
present continuous of run?
running
the past tense of buy?
bought
tasty/....
tastier
Which is used for obligation (have got to or had better)?
have got to
present simple of bought?
buy
present continuous of stop?
stopping
the past tense of read?
read
that's the .... .......... (disgusting) meal I've ever had!
That's the most disgusting meal I've ever had!
In the negative form, which one (must or have to) is still used for obligation?
must/ mustn't