to 和of的用法You are friendly to us.You are kind of us.为什么一个用to,

先看句子：You are friendly to me./It is kind of you to help me./It is important for you to learn English well.第一句用to表方向/态度.第二句可换成You are kind to help me.第三句不可换成You are important to learn English well.在句型It is +adj.+of /for sb to do sth中.何时用of 何时用for取决于形容词,当它是修饰人的品质形容词时用of,否则用fo

介词
编辑本段一、概念:
介词是一种用来表示词与词, 词与句之间的关系的词。在句中不能单独作句子成分。介词后面一般有名词代词或相当于名词的其他词类，短语或从句作它的宾语。介词和它的宾语构成介词词组，在句中作状语，表语，补语或介词宾语。
编辑本段二.相关知识点精讲
介词口诀：自从以当为按照，由于对于为了到；和跟把比在关于，除了同对向往朝；用在名词代词前，修饰动...

to

prep.
[表示方向、时间]朝...方向; 向; 往; 到
from north to south
从北到南
go to school
上学
keep to the right
靠右边走
turn to the left
向左转弯
ten minutes to nine 9