在英语学习中，选择题是常见的题型之一，它可以帮助我们检验对语法、词汇和阅读理解等方面的掌握程度。以下是一些八年级下册英语选择题的详解及答案解析，希望能帮助你更好地理解和掌握这些知识点。
词汇理解
题目：She always keeps her room neat and tidy. A. clean B. tidy C. messy D. quiet
解析：正确答案是B. tidy。这里考查的是形容词的辨析。clean意为“干净的”，tidy意为“整洁的”，messy意为“凌乱的”，quiet意为“安静的”。根据句意，她总是保持房间整洁，所以选tidy。
语法结构
题目：I think it is necessary that he ________ the meeting on time.
A. will attend B. attends C. attended D. is attending
解析：正确答案是B. attends。这里考查的是虚拟语气的用法。在表示建议、要求等时，主语从句的谓语动词要用“should+动词原形”，should可以省略。因此，正确答案是attends。
阅读理解
题目：Read the following passage and choose the best answer.
Passage: Last weekend, I went to the beach with my friends. We played beach volleyball and swam in the ocean. It was a great day. However, it started to rain in the afternoon, and we had to leave early.
Question: What did the writer do last weekend? A. He went to the library. B. He went to the beach. C. He went to the park. D. He went to the movie theater.
解析：正确答案是B. He went to the beach. 根据文章内容，作者上周末和朋友去了海滩，所以答案是B。
完形填空
题目：If you want to improve your English, you should ________ more English books.
A. read B. write C. listen D. speak
解析：正确答案是A. read。这里考查的是动词的辨析。read意为“阅读”，write意为“写作”，listen意为“听”，speak意为“说”。根据句意，如果你想提高英语水平，你应该阅读更多的英语书籍，所以选read。
翻译
题目：请将以下句子翻译成英语：“他每天早上都去跑步。”
答案：He goes running every morning.
以上是八年级下册英语选择题的一些详解及答案解析。通过这些例题，你可以更好地理解和掌握英语知识点，提高解题能力。记住，多练习是提高英语水平的关键。