托福写作句子结构错误分析之主谓一致语法的重点讲解

托福写作的评分标准中对语言语法有具体的要求。本文将列举同学们常见语法错误，大家写作中应注意规避。根据以往同学常犯的错误我们将进行分析，下文中的例子均是之前同学们常写出的问题句。此处我们会重点讲解：句子结构错误。

　　主谓数量一致

　　简单句是句子最基本单位，要符合完整性，即一个句子必须有且只有一套主语和谓语。如果

　　需要多主谓结构，需要连接词连接或者表现出逻辑关系才可以。

　　例1：

　　原句：One day, I watched this program talk about the habits of lions.

　　修改：将talk改为talking。

　　原因：句中有谓语watched，则talk需要改为非谓语动词。

　　例2：

　　原句：The reading passage contends that read fewer literature books has bad effect for reading public culture and the future of literature.

　　修改：将read改为reading。

　　原因：句中有谓语has，同时read是其主语，所以将read改为动名词。

　　例3：

　　原句：The professor proves that this claim is not correct by pointing out that destroy fossils is better than bury them in the ground.

　　修改：将destroy改为destroying;将bury改为burying。

　　原因：句中有谓语is，同时destroy和bury是其主语，故改为动名词。

　　例4：

　　原句：I loved every exciting movement that the sportsmen make, those kinds of movement make me very relaxed.

　　修改：将逗号改为分号，或句号(若改为句号，此时后面those开头字母t大写)。

　　原因：逗号没有连接两句话的功能。

　　例5：

　　原句：It is undeniable that modern people change their jobs continuously, imaginably, some people reckoned that the ability to adapt to the new environment is essential.

　　修改：将第一个逗号改为分号，或句号(若改为句号，此时后面imaginably开头字母i大写)。

　　原因：逗号没有连接两句话的功能。

　　例6：

　　原句：My brother had only learned concepts in the textbooks before, thus after the experiment, he gradually knew better about knowledge on the books.

　　修改：将thus改为but。

　　原因：thus是副词，没有连接功能;同时前后是反义关系，故改为but。

　　例7：

　　原句：Obviously, the professor’s argument disproves its counterpart in the reading. Even though the reading passage suggests that Chevalier is very poor.

　　修改：将句号改为逗号，同时后面even小写。

　　原因：even though当逻辑连接词，要连接两句话。

　　例8：

　　原句：Despite the statement in the reading that eco-certified wood is more expensive than normal wood. The professor contends that American customers will care about the price only when price difference is too big.

　　修改：将句号改为逗号，同时后面the小写。

　　原因：despite表明了逻辑关系，需要跟句号后的句子有逻辑关系。

　　例9：

　　原句：If you choosing an unsecure job, you will always worry about the stability of your job.

　　修改：将choosing改为choose。

　　原因：if如果连接句子，其中必须有谓语。