Introduce the paragraph topic.
Are the most general and most
Contain controlling ideas (ideas
that will be explained,
defined, clarified or illustrated in the
sentences which follow the topic sentence)
Are never just a fact. "I came
to Canada in 1993" is a simple fact.
With personal opinion only are
weak. Avoid the use of "I like" and "I think." E.g. "I
like dogs better than cats."
Contain a "provable" opinion
using facts from reliable sources.
May also state an "intent". E.g.
"The seven steps to making a good spaghetti sauce, one with the finest
aromas, will be explained in detail here."