高中英语：​介词+情态动词+动词的时态易错知识点

高中英语​介词+情态动词+动词的时态易错知识点：大家来说,学好高中英语至关重要的一点就是语法知识,如果能够掌握语法,那么写作和完型就能轻松许多,那么关于英语语法大家掌握多少呢?语法的易错知识点又有哪些？一起来了解一下。

**介词部分**

1. 表示交通方式时，“by + 交通工具”中间不加词，若交通工具前有修饰词，则用“in/on + 交通工具”。例如：“He usually goes to school in his father’s car.”
2. “wait”为不及物动词，需加“for”才能接宾语，如“Please wait for me at the school gate.”
3. “marry”与“to”连用，“He has been married to Betty for more than twenty years.”
4. “在……的帮助下”用“with”，如“He finished the work on time with the help of him.”

**情态动词部分**

1. 表特别有把握的肯定判断用“must”，否定判断用“can't”，“can”表判断只用在否定句中。所以“He can be at home now because the light in his room is still on.”应改为“He must be at home now because the light in his room is still on.”
2. 情态动词“need”用于否定、疑问和条件句，肯定句中用实义动词“need to do”。例如：“He needs to come here before the meeting begins.”
3. “used to”表示过去常常做某事而现在不再做，“He used to get up very early in the morning, but now he is not doing so.”
4. 谈论过去的事情时，情态动词后加“have done”，“I needn’t come yesterday because all the work had been finished.”应在“needn’t”后加“have”。
5. “had better”的否定在“better”后加“not”，如“You had better not stay up too late because you have to get up early tomorrow.”

**动词的时态部分**

1. 主句为将来时，其时间、条件、方式和让步状语从句中用一般现在时。“I will tell her about that when she comes tomorrow.”
2. “be about to”一般不与具体的时间状语连用，“The meeting is about to begin.”
3. 若为并列谓语动词，时态应保持一致，“The boy opened his eyes for a moment, looked at the captain and then died.”
4. 句中有“for + 一段时间”作状语时，谓语动词须为延续性动词，“I have kept this bike for ten years and I am still using it now.”
5. 过去的过去用过去完成时，“I hadn’t learnt any English before I came here.”

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