英语作文说明文说明文类写作指导说明文的出题形式为文字提示或图表，文体有报道、投稿、书信等。写作步骤如下：第一步：审题，确定主题句、主体时态(一般以现在时态为主)和中心人称；第二步：在主题句后按提示顺序将各要点以完整的句子表达出来；第三步：用过渡词将上下文的逻辑关系体现出来。常用词有：表示时间：now, then, afterwards, soon, five minutes later, before long, shortly after that, soon after supper, to this day, just now, just then 表示顺序、动作过程：first, firstly, first of all, second, secondly, at first, at last, next 表示转折：but, yet, and yet, however, although, otherwise, in spite of 表示结果：thus, therefore, so, as a result
