pick和pick up分别在什么时候使用?有什么区别?如题

pick和pick up分别在什么时候使用?有什么区别?如题 动词短语代词为什么代词在中间pick it up 和 pick up it pick up pick up pick up pick it up 和 pick up the book 有什么区别pick up 当做建起的意思讲.用法有什么区别,什么时候必须用某一个? pick you up 和pick up you有什么区别? 我一直不明白pick it up这类的词组和pick it up,有什么区别,分别用在什么句子中? pick out;pick up;pick over区别 pick up it和pick it 有什么区别? pick up 的所有意思?和pick 有关的词组? pick up it和pick it 有什么区别? pick out,pick up,pick at,pick on区别? pick at pick from pick up pick out when shall I PICK you UP?和when do I PICK you UP?哪个对?when shall I PICK you UP?when do I PICK you UP?这两句在up后能不能直接加tomorrow？ pick pick pick