should的发音是[d , d]。should作为情态动词,通常用来表示现在或将来的责任或义务,译作“应该”、“应当”,这时它可以和ought to, be supposed to 互换使用。一、should单词释义主要用作助动词，作助动词时意为“应该；就；可能；将要；本当；竟然&...

　With the development of our society,changes occur everyday. Every morning we get up only to find that science and technology have simultaneously bumped into our room and soon spread to the whole world. Digital camera has replaced camera;MP3 in place of...