hopeful,careful各是什么意思，加ful有什么意思

careful 仔细的;小心的
hopeful 抱有希望的;充满希望的

ful就是形容词词缀

careful：
a.
1. 仔细的;小心的[(+of/about/with)][+to-v][+v-ing][+Wh-][+(that)]
John was careful not to say anything about this to her.
约翰小心翼翼,避免向她提及此事。
Be careful with the dynamite.
当心这炸药。
A good writer is careful about details.
凡是优秀作家都重视细节的描写。
I am always careful when crossing a street.
我过马路时总是很小心的。
2. 周到的,彻底的,精心的
The doctor gave him a careful examination.
医生对他作了彻底的检查。

hopeful:
a.
1. 抱有希望的;充满希望的[(+of)][+that]
He was hopeful that he would win.
他抱有胜利的希望。
2. 有希望的;有前途的
We had a hopeful beginning.
我们的开端充满希望。
n.[C]
1. 有希望成功的人
He is a young hopeful.
他是有希望获得成功的年轻人。
2. 希望获得成功的人
presidential hopefuls
希望当选总统的人们

ful是其形容词后缀！
ful常会是其引申义！