在大学英语四级考试中，单独考察英语四级语法的题几乎没有，但是英语四级语法知识点却贯穿整张试卷，下面是华宇课件网英语四级频道为大家整理的大学英语四级语法知识，希望可以为大家带来帮助，一起来学习一下吧。
2019年12月大学英语四级语法大全目录
16.2 非真实条件句
时态可以表示过去，现在和将来的情况。它的基本特点是时态退后。
a. 同现在事实相反的假设。
句型 条件从句 主句
一般过去时 should( would) +动词原形
If they were here, they would help you.
b. 表示于过去事实相反的假设。
句型 条件从句 主句
过去完成时 should(would) have+ 过去分词
If she had worked harder, she would have succeeded.
The rice would not have been burnt if you had been more careful.
If my lawyer had been here last Saturday, he would have prevented me from going.
If he had come yesterday, I should / would have told him about it.
含义He did not come yesterday, so I did not tell him about it.
If he had not been ill and missed many classes, he would have made greater progress.
含义 He was ill and missed many lessons, so he did not make greater progress.
c. 表示对将来的假想
句型 条件从句 主句
一般过去时 should+ 动词原形
were+ 不定式 would + 动词原形
should+ 动词原形
If you succeeded, everything would be all right.
If you should succeed, everything would be all right.
If you were to succeed, everything would be all right.
2019年12月大学英语四级语法大全目录
华宇课件网中所有视频课件学习资料均来自互联网收集整理并持续同步更新！
需要免费试看课件请点->：2019年新视频课件百度云网盘免费下载资源
财经会计系列班次：零基础班，预习班，基础班，强化班，习题班，串讲班，冲刺班及习题模拟试题
建筑工程系列班次：预习班，真题解析班，精讲班，强化班，习题班，冲刺班，押题班及考前押题Word
公务员国/省考班次：技巧班，真题班，专项班，突破班，模块班，培优班，冲刺班，及考前预测试卷
考研类课程班次：导学班，零基础班，基础班，强化班，冲刺班，密训班，电子书，考前模拟试卷
所有考试资料都包含视频+讲义+习题等学习资源，全方位的针对不同层次备考考生进行学学习强化
需要新考试学习资料请点击：精品资料选择你需要的考试栏目查看资源
