for example;

for instance;

in this case;

namely;

as you know;

you may as/say;

as he explains;

like; such as;

a case in point is...;

consider...;

in particular;

including...;

for one thing...，for another...;

a good example (of...)would be...;

to detail this，I would like to...;

It is interesting to note that...;

in this situation;

as proof;

take the case of;

take as example (something);

as for; as regards;

as to;

according to;

on this occasion.

put it simply;

stated roughly;

as an illustration，I will say...;