check wikitionary
Infinitive
to appreciate
Third person singular
appreciates
Simple past
appreciated
Past participle
appreciated
Present participle
appreciating
to appreciate (third-person singular
simple present appreciates, present participle
appreciating,
simple past appreciated, past participle
appreciated)
Dear Daisuke-kun,
i own a dictionary at home. If not, it is also very easy for me
to search for the meaning of this word "appreciate" online. I can
quote u an example of the usage of this word "appreciate" too.
For e.g.
I do not appreciate your joke.
However, i do appreciate your efforts in
vain.
Thank you.