have这个词非常容易见到，也非常简单，但，使用方法是比较复杂的。have是一个助动词，表示“有、从事、允许”的意思。在四级英语考试中，助动词have这一考试知识点看着简单，其实是比较难的。
1、助动词have的使用方法
助动词have是英语中最常见的助动词之一，它有以下几种使用方法：
1、表示完成时态
have + 过去分词，表示完成时态，表达已经完成的动作或状况。
例句：
I have finished my homework. 我已经完成了我的功课。
2、表示持续性动作的完成
have + 目前分词，表示正在进行的动作在过去已经完成。
例句：
I have been studying English for 5 years. 我已经学英语5年了。
3、表示拥有或拥有
have + 名词，表示拥有或拥有某种东西或特点。
例句：
She has a beautiful smile. 她有一个漂亮的微笑。
4、表示经验或感受
have + 过去分词，表示过去历程过或感受过某种事情或情感。
例句：
I have never been to New York. 我从未去过纽约。
5、用于疑问句和否定句中
have + 主语 + 过去分词，表示否定或疑问。
例句：
Have you finished your homework? 你完成功课了吗?
She hasn't seen the movie yet. 她还没看这部电影。
应该注意的是，助动词have的时态应该依据句子主语的人称和数来决定。对于第三人称单数主语，应用has作为助动词，其他状况下都用have。
2、助动词have的题目
用have的正确形式填空：
1、She _________ a nice car.
2、They __________ lunch an hour ago.
3、He __________ lived in China for 5 years.
4、We ___________ a great time on the beach yesterday.
5、You ____________ to the new restaurant in town.
将下列句子改为否定句和疑问句：
1、She has finished her work.
2、They have been waiting for an hour.
3、He has lived in Japan before.
将下列句子改为完成时态：
1、I am writing a letter.
2、They are playing basketball.
3、She is watching TV.
用have的正确形式填空：
1、She has a nice car.
2、They had lunch an hour ago.
3、He has lived in China for 5 years.
4、We had a great time on the beach yesterday.
5、Have you been to the new restaurant in town?
将下列句子改为否定句和疑问句：
1、She hasn't finished her work. / Hasn't she finished her work?
2、They haven't been waiting for an hour. / Haven't they been waiting for an hour?
3、He hasn't lived in Japan before. / Hasn't he lived in Japan before?
将下列句子改为完成时态：
I have written a letter.
They have played basketball.
She has watched TV.