Go about (sth) – to find some way of doing it
Ø
What’s the best way to go about starting an online business?
Ø
How can we go
about recruiting people during the festive season?
Go after (sb) – to chase or follow someone
Ø
The police went
after the robbers but lost them in the crowd of people.
Go against (sth/sb) – to disagree with something
or someone
Ø
It goes against
company policy to keep complacent employees.
Ø
To go against
traffic is not only dangerous, but suicidal.
Go back (on sth) – to break a promise
Ø It's terribly disappointing that the manager has gone back on his word and decided not to give me a raise after all.
Ø
The government looks likely to go back on its decision not to increase fuel prices.