seek 一般用于抽象意义,有时也表示渴望得到某一具体的东西,是比较正式的书面用法.可构成seek for,seek
after等短语,作“寻找,设法得到”等解.其后可接动词不定式,此时表示“试图,企图”.如：
They seek information from various sources.他们从各种来源收集信息.
look for 强调找的过程.如：
He is looking for his dictionary bought yesterday.他在找昨天买的那本词典.
附：它们与search,hunt for,find,find out 的区别
search 通常指对某处、某地进行搜查或搜索；对人时为“搜身”.常接for构成短语search for,作“寻找；搜寻”解,其对象多为一个或一批人或物,如找矿,找资料,找文件,找工作等.它强调寻找的行为,不着重结果.如：
The police searched him but nothing was found on him． 警方搜了他的身,但什么也没找到.
They are searching for the missing child．他们在寻找失踪的孩子.
hunt for 指竭力搜寻,其搜寻对象往往是某种迫切需要的东西或人.如：
This is just the thing I am hunting for.这正是我在找的东西.
They’ve been hunting for you everywhere.他们一直在到处找你.
find 通常强调找的结果.其后可跟名词、复合结构或that从句.如：
Use your head,then you'll find a way.开动脑筋,就会有办法的.
He found his home village unchanged.他发现家乡还是老样子.
find out 通过观察、调查、询问等方式找出（原因等）,或发现（秘密、错误）情况等,其后一般跟名词、代词或从句.如：
Have you found out his address?你查到他的住址了吗?
P
They seek information from various sources.他们从各种来源收集信息.
look for 强调找的过程.如：
He is looking for his dictionary bought yesterday.他在找昨天买的那本词典.
附：它们与search,hunt for,find,find out 的区别
search 通常指对某处、某地进行搜查或搜索；对人时为“搜身”.常接for构成短语search for,作“寻找；搜寻”解,其对象多为一个或一批人或物,如找矿,找资料,找文件,找工作等.它强调寻找的行为,不着重结果.如：
The police searched him but nothing was found on him． 警方搜了他的身,但什么也没找到.
They are searching for the missing child．他们在寻找失踪的孩子.
hunt for 指竭力搜寻,其搜寻对象往往是某种迫切需要的东西或人.如：
This is just the thing I am hunting for.这正是我在找的东西.
They’ve been hunting for you everywhere.他们一直在到处找你.
find 通常强调找的结果.其后可跟名词、复合结构或that从句.如：
Use your head,then you'll find a way.开动脑筋,就会有办法的.
He found his home village unchanged.他发现家乡还是老样子.
find out 通过观察、调查、询问等方式找出（原因等）,或发现（秘密、错误）情况等,其后一般跟名词、代词或从句.如：
Have you found out his address?你查到他的住址了吗?
P