5.possible 形容詞，可能得。表示可能性
常用句型:
It is possible to do sth.
It is possible that…
It's possible to learn English well in 3 years..三年內學好英語是可能得。
Is it possible to finish the work today?今天有可能完成這項工作么?
Is it possible to visit Alaska in December?12月份去阿拉斯加旅游有可能么?
It is possible that it will snow in the nigh.夜里有可能會下雪。
It is possible that it’ll be snowy tomorrow.明天有可能會下雪。
4.It is impossible to imagine.那是難以想象得。(教材第20頁，2)
impossible形容詞，不可能得;(事情)辦不到得，由 possible(可能得)加否定前綴im-構成得形容詞。
It is impossible(for sb.) to do sth.(對某人來說)做某事是不可能得
It is impossible for me to buy a big house.對我來說，買個大房子是不可能得。
否定前綴
im-,in-，un-，dis-
polite有禮貌得-impolite不禮貌得
expensive昂貴得- inexpensive不昂貴得
happy高興得- unhappy不高興得
like喜歡- dislike(不喜歡
