◎ 题干
基本语法 。
1. When he was five, he_________(begin) to  read  and write.
2. If you ask him,he_______(help) you.
3. When water________(become) gas,we call it steam.
4. We________(have)a ball game if it is fine tomorrow.
5. As soon as water boils,it________(change) into vapour  little by litle.
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“基本语法 。1. When he was five, he_________(begin) toreadand write.2. If you ask him,he_______(help) you.3. When water________(become) gas,we call it steam.…”主要考查了你对  【实义动词的单数第三人称形式】【实义动词的过去式】【被动语态】【一般将来时】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。