【托业考试语法练习题及解析】在托业（TOEIC）考试中，语法部分是考生需要重点掌握的内容之一。良好的语法基础不仅能帮助考生更准确地理解听力和阅读材料，还能在写作和口语部分表现出色。以下是一些针对托业考试的语法练习题及其详细解析，帮助考生提升语言运用能力。
一、选择题练习
1. The company is planning to ______ a new product next month.
A) launch
B) launching
C) launched
D) to launch
正确答案：A) launch
解析： 此句中，“planning to”后面应接动词原形，因此“launch”是正确的形式。选项B是现在分词，用于进行时态；C是过去分词，用于被动语态；D是不定式，不符合语法规则。
2. She has been working here ______ five years.
A) since
B) for
C) in
D) during
正确答案：B) for
解析： “for + 时间段”用于表示持续时间，如“for five years”。而“since”后接具体时间点（如“since 2019”）。选项C和D在此语境中不合适。
3. I don’t know ______ he will come tomorrow.
A) that
B) if
C) whether
D) when
正确答案：C) whether
解析： 在疑问句或不确定的情况下，使用“whether”引导宾语从句更为正式和标准。虽然“if”也可以用于此情况，但在正式场合中“whether”更常见。
二、改错题练习
4. He was very tired, so he went to bed early.
A) He was very tired, so he went to bed early.
B) He was very tired, and he went to bed early.
C) He was very tired, but he went to bed early.
D) He was very tired, or he went to bed early.
正确答案：A) He was very tired, so he went to bed early.
解析： 句子结构正确，逻辑关系清晰。“so”表示因果关系，符合上下文意思。选项C中的“but”表示转折，与句意不符；D中的“or”表示选择，也不合适。
5. She didn’t go to the party because she was sick.
A) She didn’t go to the party because she was sick.
B) She didn’t go to the party because of being sick.
C) She didn’t go to the party because of she was sick.
D) She didn’t go to the party because of being sick.
正确答案：A) She didn’t go to the party because she was sick.
解析： “because”后面应接完整的句子，而不是名词短语。选项C中“because of”后接名词或动名词，但不能直接跟主谓结构。选项B虽然语法上可以接受，但不如A简洁自然。
三、填空题练习
6. The manager asked me ______ the report by Friday.
答案：to submit
解析： “ask someone to do something”是固定搭配，因此应填入动词原形“submit”。
7. We have not received any response ______ the email we sent last week.
答案：to
解析： “response to”是固定搭配，表示对某事的回应。
四、总结建议
托业考试的语法部分虽然不占全部分数，但却是提高整体成绩的关键。建议考生在备考过程中：
- 多做真题练习，熟悉题型和出题思路；
- 注重语法规则的实际应用，而非死记硬背；
- 培养语感，通过大量阅读和听力训练增强语感；
- 遇到不会的题目及时查阅资料或请教老师，避免形成错误习惯。
通过系统的练习和扎实的语法基础，相信每位考生都能在托业考试中取得理想的成绩。希望以上练习题及解析对大家有所帮助！
