精选优质文档-倾情为你奉上Unit 5 Topic1 重点语法一般现在时（常与频度副词never, seldom, sometimes, often,usually, always等连用）重点详解1I always come to school by bus. by+交通工具名称，表示使用某种交通方式，中间不加限定词，如果交通工具前有a, the, my 等限定词，就不能用by,而是用in或是on. on the train=by train on his bike=by bike in my car=by car. 巧辩异同on foot 与 walk on foot “走路”，是介词短语，不能作谓语，只作方式状语，位于句末。walk “走路”,是动词，可以作谓语。go toon foot= walk to I often go to school on foot. =I often walk to school. 同样，go to.by bike = ride a bike to
