句子的连贯性：指句子连接贯通，衔接自然。句子不论长短都应环环紧扣，符合语法、逻辑。请注意以下要点：
1)平行结构：把两个获两个以上意思相近或相对的、地位相当的成分已同意与发行是泛指在一起。其中以下三条规则须加以注意。
a)使用相同的语法来表达具有相同功能的句子成分，可运用并列连词and, but或or等。
× If you want to learn a foreign language well, you'd better try to think in it and speak it as much as possible.
√ If you want to learn a foreign language well, you'd better try to think in it and to speak it as much as possible.
b)正确使用相关连词，如both...and, not ... but, not only ... but also等。
× Wang Lan is not only clever but also she is helpful.
√ Wang Lan is not only clever but also helpful.
c)一个句子或段落中的人称、时态、语态要始终保持一致。
× One reason I like to go to school on foot is the physical exercise I get from it.
√ I like to go to school on foot I regard it as a kind of physical exercise.
2)代词一致：句中代词应在数、性、人称等方面保持一致，或者与它所照应的名词词组在这些方面保持一致。如：
We each are responsible for our own jobs.
We are each responsible for his own jobs.
3)代词与先行词一致：写作时应弄清楚代词究竟指代哪个名词，否则意思不明确，造成模棱两可的感觉。如：
× The old woman told the little girl that she was wrong.
√ The old woman told the little girl,"I am wrong."
√ The old woman told the little girl,"You are wrong."
练习：
下列句子中都存在不连贯的问题，请修改并指出属于哪类情况。
1)He asked the policeman what had happened to him.
2)Not only he did make a promise, but he kept.
3)All are ready, isn't it?
4)Listening to the wind and smell the fragrant of the lily, you will found that the summer is coming.
5)The most important reason I accept his advice is his knowledge of marketing I know from his words.
参考答案
1)He asked the policeman， "What happened to you?"
/ He asked the policeman， "What happened to me?"
代词与先行词不一致
2)Not only did he make a promise, but he kept.
连词使用不当(not only前置一定要用倒装句)
3)All are ready, aren't they?
代词不一致
4)Listening to the wind and smelling the fragrant of the lily, you will found that the summer is coming.结构不平行
5)I accept his advice because I know he is keen in marketing.
语态不一致
