suffice:
不及物動(dòng)詞 vi. [W]
1.足夠[(+for)]
Her income suffices for her needs.
她的收入足夠她用。
2.【舊】有能力

及物動(dòng)詞 vt.
1.使?jié)M足,滿足...的需要[W]
Some bread and soup will suffice me.
一些面包和湯就夠我吃的了。

because和because of的區(qū)別：
because+句子
because of+名詞

because 后邊要接一個(gè)完整的句子
because of 后邊一定要接一個(gè)不是句子的句子（短語）
例如：I didn't go to school because i am ill.
I didn't go to school because of my illness.

vengeance:
名詞 n.
1.報(bào)復(fù);報(bào)仇,復(fù)仇[U][S1][(+on/upon)]
Herbert swore vengeance on the murderers of his father.
赫伯特發(fā)誓要向謀殺他父親的兇手們報(bào)仇。

how far 和how long的區(qū)別：
how far 的意思是多遠(yuǎn)，一般引導(dǎo)提問路程的特殊疑問句
例：How far is it from your home to school? 你家到學(xué)校有多遠(yuǎn)？

how long 的意思是多長時(shí)間，一般引導(dǎo)提問時(shí)間的特殊疑問句
例：How long have you been in America? 你在美國呆了多久？

stop to do sth是停止正在做的事，去做另一件事
stop doing sth是停止正在做的的事