比较作文开头英语怎么说

在写英文作文时，通常需要在开头部分写出一个较为简洁的句子来引入文章的主题。这个句子通常被称为 "introductory sentence" 或 "opening sentence"。

一种常见的方式是使用 "compare and contrast" 的句型，表示将在文章中比较两个或多个事物的相似之处和不同之处。常见的比较级连词有 "compared to"、"in comparison to"、"similar to"、"unlike" 等。

例句：

Compared to traditional schools, online schools have several advantages and disadvantages.
In comparison to a car, a bike is less expensive and more environmentally friendly.
Similar to cats, dogs can be trained to perform a variety of tricks.
Unlike a hammer, a screwdriver is better suited for turning screws.

此外，还可以使用其他的句型来开头，例如问句、陈述句等。

例句：

What are the benefits and drawbacks of living in a city versus living in the countryside?
Have you ever thought about the differences between living in the city and living in the countryside?
Many people believe that living in a city has more advantages than living in the countryside.

总之，选择合适的开头句型可以帮助读者了解文章的内容，并吸引读者的兴趣。