转折句在托福的写作中起到了非常重要的作用，如何运用转折句让整体的文章变的逻辑清晰，结构分明就变的非常的有必要了。这里就给各位同学介绍几种比较高效的转折句句式。
1. However
1)We thought the figures were correct. However, we have now discovered some errors.我们原以为这些数据正确，不过我们现在发现了一些错误。
2)However, he smothered, as best he was able, these feelings.然而，他尽其所能抑制住了这些感情。
3)If, however, you are an extrovert you are quite likely to enjoy it.然而，如果你是一个性格外向的人，你很可能会喜欢它。
4)It was, however, a little disappointing.不过，这有点儿令人失望。
2. Nonetheless
1) The book is too long but, nonetheless, informative and entertaining.这本书篇幅太长，但是很有知识性和趣味性。
2) The problems are not serious. Nonetheless, we shall need to tackle them soon.问题不严重， 不过我们还是需要尽快处理。
3) Nonetheless, it contains an element of truth.然而它也有些道理。
3. Nevertheless
1) He was very tired, nevertheless he kept working.他累得很，然而仍继续工作。
2) There is little chance that we will succeed in changing the law. Nevertheless, it is important that we try.我们几乎没有可能改变法律。不过，重要的是我们努力争取。
3) Nevertheless, they deserve notice and respect.然而，他们应该受到重视和尊敬。
4. By comparison
1) He was mortified by comparisons between his classmates’ good marks and his own.拿自己的成绩与同学们的优异成绩相比较他感到羞愧。
2) By comparison, expenditure on education increased last year.相比之下，去年教育经费增加了。
5. By contrast
1) By contrast, she was much more outspoken.对比起来，她坦率得多。
2) When you look at their new system, ours seems very old-fashioned by contrast.看看他们的新系统，我们的相比之下就显得太过时了。
6. Therefore
1) He is young and therefore easily pervertible.他年轻，因而容易变坏。
2) All sincere opinions should therefore be respected.因此一切诚恳的意见都应该收到尊重。
3) He is highly strung, and therefore, subject to heart attacks.他神经高度紧张，所以很容易发心脏病。
4) Therefore energy is now not a peripheral but a central issue in the economy.因此，能源在现时经济中并非枝节问题而是一个中心问题。
5) We have a growing population and therefore we need more and more food.我们的人口越来越多，因此我们需要越来越多的食物。
7. Hence
1) It’s handmade and hence expensive.这是手工制作的，因此价格很贵。
2) The computer has become smaller and cheaper and hence more available to a greater number of people.计算机已向小型低价的方向发展，从而使更多的人能够用上。
在自己的文章中使用这些转折句可以很好的帮助学生在整体的写作考试中取得不错的成绩。
