七， 学术类文章的一些文体注意事项
让我们通过具体的例子来了解此类文章书写和文体的特点
1. N2O wasn’t produced until 1990, after which, its production grew rapidly.
雅思文章为正式文体，所以尽量不要出现缩写，wasn’t 建议写成was not。
2. The bottles are first divided by color into clear, brown and clear ones which are then washed by high- pressurised water.
拼写出现问题。在雅思写作中，英式和美式拼写都接受，但我们还是尽量做到两者不混淆。如or 和our, se和 ze。or 和ze 为美式拼写，而our 和se为英式拼写。
3. Nowadays, more and more people have private cars.
more and more 词汇过于简单，我们可以用an increasing number of 来替代。
4. Let all of us make great efforts to construct a more civilised China!
此句子喊口号，抒发情感。雅思大作文为议论文，不需要任何形式的情感抒发和口号，所以这句话不适合这样的语言环境。
