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do和does被评为单词界的“活雷锋”!颁奖词是：“因为他俩用作助动词时，本身并没有实在的意义，但却热心地帮助实义动词构成一般疑问句和否定句。”的确如此，你瞧：
He has an English book——Does he havean English book? (一般疑问句)
Mary plays football every afternoon.——Mary doesn't play football every afternoon.(否定句)
看到了吧，含有实义动词的句子在变一般疑问句和否定句时，不能直接在动词上变，而是要靠do和does的帮助：当d0和does站在句首时，句子就变成了一般疑问句：当(do和does的否定形式don’t和doesn’t站在谓语动词前时，句子就变成了否定句。
注意：这两种句子中的实义动词要变成原形。do和does有明确的分工：does只管主语是第三人称单数(he，she，it或单数名词)的句子；其余的一律归do管。用所给动词的适当形式填空：
1. He________(live) in Wuxi two years ago.
2. The cat___________(eat) a bird last night.
3. We__________(have) a party last Halloween.
4. Nancy____________(pick) up oranges on the farm last week.
5. I____________(make) a model ship with Mike yesterday.
6. They______________(play) chess in the classroom last PE lesson.
7. My mother_____________(cook) a nice food last Spring Festival.
8. The girls____________(sing) and____________(dance) at the party.
He has an English book——Does he havean English book? (一般疑问句)
Mary plays football every afternoon.——Mary doesn't play football every afternoon.(否定句)
看到了吧，含有实义动词的句子在变一般疑问句和否定句时，不能直接在动词上变，而是要靠do和does的帮助：当d0和does站在句首时，句子就变成了一般疑问句：当(do和does的否定形式don’t和doesn’t站在谓语动词前时，句子就变成了否定句。
注意：这两种句子中的实义动词要变成原形。do和does有明确的分工：does只管主语是第三人称单数(he，she，it或单数名词)的句子；其余的一律归do管。用所给动词的适当形式填空：
1. He________(live) in Wuxi two years ago.
2. The cat___________(eat) a bird last night.
3. We__________(have) a party last Halloween.
4. Nancy____________(pick) up oranges on the farm last week.
5. I____________(make) a model ship with Mike yesterday.
6. They______________(play) chess in the classroom last PE lesson.
7. My mother_____________(cook) a nice food last Spring Festival.
8. The girls____________(sing) and____________(dance) at the party.