在谈到雅思考试写作的的评分标准中，其关键在于最后一项“Grammatical Ranges &Accuracy”的正确把握和理解，此项评分标准考察考生写英语句子的能力。它体现在两点上：多样性和准确性。这里就句子的多样性进行探讨。 句子的多样性取决于句子类型的丰富性，一篇文章能够熟练使用不同的句型。换句话说，它考察的是考生能否像当地居民(native speaker)一样写出地道的句子。它既考察考生简单句和复杂句的综合运用能力，还考察考生对不同的句型的掌握情况。根据专家的总结，这些高分的语法结构主要有以下几种： 1. 状语前置 状语前置就是把一个修饰动词的状语结构，如介词短语，分词形式或动词不定式引导的短语放到句首。雅思写作中状语前置是很拿分的句式，不过很多考生都没意识到这一点。 请看下面从剑桥提供的范文中节选的句子： 1) Like self-awareness, this is also very difficult to achieve, but I think these are the two factors that may be the most important for achieving happiness。 2) Throughout the century, the largest quantity of water was used for agricultural purposes。 3)With a population of 176 million, the figures for Brazil indicate how high agricultural water consumption can be in some countries。 使用状语前置的最大优点是让单调的句子有了跳跃的节奏感。考官一天看上百张考卷，看到这样的句子也会心情愉悦。 注意：插入语 此种语法结构是可以理解为是状语前置的另一种变体，它将状语结构提到了主句的主语和谓语之间。插入语也是相对地道的英语表达方法。请看以下几例： 1)Universities, when it is ning well, should offer both theoretical knowledge as well as professional training。 2)So overall, I believe that, attending school from a young age is good for most children。 插入语的功能和状语前置基本相似，都能使句子更有跳跃感和地道。 2. 倒装句 即把谓语提前到主语之前，用在作文中比较新颖。 我们先来看以下几个例子： 1). The parents should spend time on their children, they should also communicate with them。 2). We can never lose sight of the significance of education。 以上两句话都没有任何错误，但是读来非常平淡，没有任何特色，如果我们用倒装句，出来的效果就完全不一样了。 1). Not only should parents spend time on their children, they are also advised to interact with them。 2). On no account / by no means / in no way can we lose sight of the significance of education。 3. 强调句 It is … that … / It is … who …正是…导致了 以下是考官写的一句话： 1. It is the interaction of the two that shapes a person’s personality and dictates how that personality develops。
