They beat him black and blue means they beat him badly.
I would like to go
or
I would go
or
I wish to go
expresses the same idea.
go through means read.
ex:I went through the book.
we live by the bank means we live by the side of the bank.
He goes by my house means he goes in this route.
come by 5 p.m means come not after 5 p.m.
come at 5 p.m. means come not after and not before 5 p.m. . Exactly 5 p.m.
He jumped off the bus. (off the bus means from the bus).
He is writing examination. W
He is taking examination. R