1选择题
The scientist ______ research on climate change is widely recognized will give a lecture next week.
- A. who
- B. whose
- C. whom
- D. which
答案：B
解析：本题考查定语从句关系代词的用法。从句主语research与先行词scientist之间存在所属关系，应使用whose引导定语从句。易错点：学生可能误选A或C，忽略了research与scientist的所属关系。
2选择题
______ the project on time, the team worked late into the night for several days.
- A. Completing
- B. To complete
- C. Completed
- D. Having completed
答案：B
解析：本题考查非谓语动词作目的状语。不定式To complete表示目的，意为“为了按时完成项目”。易错点：学生可能误选A（现在分词），但此处并非伴随状语，而是明确的目的状语。
3选择题
If I ______ you, I would take the opportunity to study abroad.
答案：C
解析：本题考查虚拟语气在条件句中的用法。表示与现在事实相反的假设，从句用一般过去时，be动词一律用were。易错点：学生可能受口语影响误选B（was），但在正式虚拟语气中，第一、三人称单数也应用were。
4选择题
The question ______ we should go hiking or stay at home hasn't been decided yet.
- A. which
- B. that
- C. whether
- D. what
答案：C
解析：本题考查名词性从句（同位语从句）。从句解释说明question的内容，且含有“是否”的含义，应使用whether引导。易错点：学生可能误选A或B，但which和that无法表达“是否”的含义。
5填空题
The bridge ______ (build) last year has greatly improved the traffic in the area.
答案：built
解析：本题考查非谓语动词作定语。bridge与build之间是被动关系，且动作已完成，应使用过去分词built作后置定语。易错点：学生可能误写为being built（表示正在进行）或to be built（表示将来）。
6填空题
It is required that every student ______ (submit) their homework before Friday.
答案：(should) submit
解析：本题考查虚拟语气在主语从句中的用法。It is required/demanded/suggested等结构后的that从句中，谓语动词用“(should) + 动词原形”。易错点：学生可能误用submits或submitted，忽略了虚拟语气的特殊要求。
7解答题
将下列句子合并为含定语从句的复合句：
I bought a book. The book was written by a famous author.
答案：I bought a book that/which was written by a famous author. 或 I bought a book written by a famous author.
解析：本题考查定语从句的转换。可以用关系代词that/which引导定语从句，也可以将定语从句简化为过去分词短语作后置定语。易错点：学生可能遗漏关系代词，或错误使用who（先行词是物）。
8解答题
用非谓语动词改写句子：Because he didn't know the answer, he kept silent.
答案：Not knowing the answer, he kept silent.
解析：本题考查非谓语动词作原因状语。原句为because引导的原因状语从句，主语he与know之间是主动关系，且表示伴随状态，应使用现在分词的否定形式Not knowing。易错点：学生可能误用Not to know（不定式表目的）或Not known（过去分词表被动）。