首先是对这一流程的总体概括The original patent outlined a three-stage process, in which phenol and formaldehyde were initially combined under vacuum inside a large egg-shaped kettle。 我们可以根据这个句式来描写2009年9月一道关于玻璃瓶子回收过程的题目,
如:A three-stage process is outlined, in which the used bottles are collected and re-produced in the plant.
接着,制作过程中的细节按照先后顺序铺开,并结合被动语态与准确的动词选择:The resin was allowed to cool in shallow trays until it hardened, and then broken up and ground into powder. Other substances were then introduced, including. . In the last stage, the heated Bakelite was poured into a hollow mould of the required shape ,其中的cool, break, grind, pour等动词都是在工作流程中的高频词汇。then, in the last stage也可以作为极好的连接过渡词。
剑五Test 4 Reading passage 2关于强化玻璃的说明文中也有类似的描述句式: used to make glass, and nickel can also be introduced by fragments of nickel alloys falling into the molten glass. As the glass is heated, these atoms react to form
其中的be used to, introduce, melt, heat也都可以用在描述中。
3.图表的描述
由于阅读文章中也不乏对于数据的说明,我们也很容易找到可以在雅思图表作文中使用的句式。
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