personal opinion。
with very little effort。
don’t know whether to laugh or cry。
a qualified teacher。
a ridiculous claim。
It is natural …。
It is no use doing …。
This is true to a certain extent …。
have a great advantage over others。
go to the opposite extreme。
a precise equivalent。
and vice versa。
be based on。
behaviorist psychology。
be fond of。
in my personal opinion。
relate … to …。
It is worth remembering that …。
a means of communication。
be probably very similar to …
It will be helpful to …
a relevant point worth mentioning.