1、a pair of shoes like hers介词短语作后置定语,"like hers"作形容词修饰"a pair of shoes ".like意为“像”.
2、a quarter to eleven或eleven forty-five.为什么want后面不要加to呢。不是说，want后要加to吗want to do sth.（想要做某事）与want sth. （想要某物）是不同的。want是实意动词，后直接加名词。want to do sth.=would llike to do sth.=feel like doing sth.