for / at / in / on / of / to / about 都是介词， and 是连词
介词后面加动名词（也就是动词变成名词形式如 doing）或者名词形式：
for 跟 of 以及 about 用法类似
buy sth for sb buy a hat for her
buy sth for doing sth buy a lot of things for having a party
at + 地点 / 时间 at home / at seven o'clock
in + 地点 / 时间段 in the class / in the period of the war 短语：in time 及时
on+地点 on the table 短语：on time 准时
to + 动词原型( do ) / 地点 / 某人 to have a rest / go to school / take a hat to sb
and 是连词，表并列： you and me / I like dance and you like dance , too / I like apples and pears.
追问不怎么看得懂！
追答呃 哪儿看不懂了
追问介词后面加动名词（也就是动词变成名词形式如 doing）或者名词形式：
for 跟 of 以及 about 用法类似这里哦！那其他的变法呢？？？？？？？？？？？？其他词变不同词呢？
追答for doing( taking / having /celebreating 等等动词的动名词形式)
for sth / sb （have bread for breakfast / sing a song for the girl等等）
of doing / sth ( think of having a dinner with the girl / some of the girls.../some of the apples...)
about doing /sth ( about having a party / about the thing / the story about her)