【最新大学英语四六级语法专项练习及答案】在备战大学英语四六级考试的过程中，语法部分往往是许多考生感到棘手的难点。为了帮助大家更好地掌握语法知识，提升应试能力，本文整理了一套最新大学英语四六级语法专项练习题，并附有详细解析，便于考生自查和巩固。
一、时态与语态
1. By the time we arrived at the station, the train ______ already left.
A. had gone
B. had been
C. has gone
D. has been
2. The new library ______ by the end of this year.
A. will be completed
B. is being completed
C. will have been completed
D. has been completed
答案与解析：
1. 正确答案是 A. had gone。句中“by the time we arrived”表示过去某个时间点之前已经发生的事情，因此要用过去完成时。
2. 正确答案是 C. will have been completed。句子中的“by the end of this year”表示将来某个时间点之前已经完成的动作，因此使用将来完成时的被动语态。
二、虚拟语气
3. If I ______ you, I would not have made such a mistake.
A. was
B. were
C. am
D. are
4. It’s high time that we ______ to take action.
A. should go
B. went
C. go
D. will go
答案与解析：
3. 正确答案是 B. were。这是对现在事实的虚拟，用“were”表示假设。
4. 正确答案是 B. went。“It’s high time that...”结构后应接过去式动词，表示“早就该做某事”。
三、非谓语动词
5. He was seen ______ the building at midnight.
A. enter
B. entering
C. entered
D. to enter
6. She prefers ______ rather than ______.
A. to stay; go out
B. staying; going out
C. to stay; going out
D. staying; go out
答案与解析：
5. 正确答案是 B. entering。在“be seen + doing”结构中，用动名词形式。
6. 正确答案是 B. staying; going out。“prefer doing something rather than doing something else”是固定搭配。
四、从句
7. I don’t know ______ he will come or not.
A. if
B. whether
C. that
D. what
8. The man ______ is standing over there is our new teacher.
A. who
B. whom
C. which
D. whose
答案与解析：
7. 正确答案是 B. whether。在“whether...or not”结构中，不能用“if”。
8. 正确答案是 A. who。指代人，并在句中作主语，所以用“who”。
五、倒装句与强调句
9. Only in this way ______ achieve success.
A. can we
B. we can
C. we could
D. could we
10. It was the teacher ______ helped me with my English.
A. who
B. that
C. whom
D. which
答案与解析：
9. 正确答案是 D. could we。当“only + 状语”位于句首时，需要倒装。
10. 正确答案是 B. that。在强调句型“It is/was + 被强调部分 + that/who”中，如果被强调的是人，可以用“who”或“that”，但通常更常用“that”。
结语
语法是英语学习的基础，也是四六级考试中不可忽视的重要部分。通过系统地练习这些语法题目，考生可以有效提高语言运用能力，增强答题信心。希望以上内容能为大家的学习提供帮助，祝大家在考试中取得理想成绩！
