For suggestions, you can give polite
suggestions using the words “I think”,
“I recommend”, “I suggest” and “I hope”.
Depending on the tone of your voice, the
suggestion can be either soft or strong.
For example, think of the difference
between someone that says “I hope you
can improve your performance” softly as
compared to someone who says it loudly
and forcefully. In this situation, the
suggestion stops being a suggestion
and becomes more like a demand. So do
pay attention to your voice when using
these words.