Tom___water the flowers every morning这是一个选择题Tom___water the flowers every morning a.doesn't need b.needn'tc.don't need to d.needn'tWe need a hole large enough for the tree(改为否定）We ___ ____a hole large enough for the tree

Tom___water the flowers every morning这是一个选择题Tom___water the flowers every morning a.doesn't need b.needn'tc.don't need to d.needn'tWe need a hole large enough for the tree(改为否定）We ___ ____a hole large enough for the tree
Tom___water the flowers every morning这是一个选择题
Tom___water the flowers every morning
a.doesn't need b.needn't
c.don't need to d.needn't
We need a hole large enough for the tree(改为否定）
We ___ ____a hole large enough for the tree

Tom___water the flowers every morning这是一个选择题Tom___water the flowers every morning a.doesn't need b.needn'tc.don't need to d.needn'tWe need a hole large enough for the tree(改为否定）We ___ ____a hole large enough for the tree
1.Tom___water the flowers every morning.
a.doesn't need
b.needn't
c.don't need to
d.needn't
2.We need a hole large enough for the tree.(改为否定）
We ___ ____a hole large enough for the tree.
答案：1.B
2.don't need

1 B与D 相同，就是这个答案，即needn't
2 don't need

第一个题选B.先看A，need做普通动词的时候后面如果跟动词要加to，A错。C的do没有改为三单形式，错。貌似BD一样啊？
第二个题填don't deed

1.从 every morning中可以看出应有一般现在时故选 a 2.don't need

Bdon't need

doesn't need to 和 needn't
we don't need......

Tom___water the flowers every morning
a.doesn't need b.needn't
c.don't need to d.needn't
答：BD
译：汤姆不必每天上午浇花。
析：此意有三译：
1. Tom doesn't need to ....
2. Tom do...

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Tom___water the flowers every morning
a.doesn't need b.needn't
c.don't need to d.needn't
答：BD
译：汤姆不必每天上午浇花。
析：此意有三译：
1. Tom doesn't need to ....
2. Tom doesnt have to ....
3. Tom needn't water ...
need有两用，1实义动词，2.情态动词（用于非肯定句）
We need a hole large enough for the tree(改为否定）
We ___ ____a hole large enough for the tree
答：机械做题：don't need
评：否定句不符合生活逻辑。

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应选B。needn't 为情态动词，另外A选项need 为实意动词，需加不定式符号 to.
第二题应该填 don't need. 因为need 是实意动词。

选择b.
need 做情态动词时，后面用动词原形，其否定形式为：needn't；
need 做实意动词时，后面的动词用不定式to do, 其否定形式为：don't / doesn't / didn't（根据时态和人称变化）need to do。若后面为名词，则否定形式为：don't need sth
第二题填空答案为：don‘t need...

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选择b.
need 做情态动词时，后面用动词原形，其否定形式为：needn't；
need 做实意动词时，后面的动词用不定式to do, 其否定形式为：don't / doesn't / didn't（根据时态和人称变化）need to do。若后面为名词，则否定形式为：don't need sth
第二题填空答案为：don‘t need

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Tom___water the flowers every morning
a.doesn't need b.needn't
c.don't need to d.needn't
b 和d选项应该不同吧，我觉得应该选needn't这里它做情态动词用。后面Water为动词原型（浇），
We need a hole large enou...

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Tom___water the flowers every morning
a.doesn't need b.needn't
c.don't need to d.needn't
b 和d选项应该不同吧，我觉得应该选needn't这里它做情态动词用。后面Water为动词原型（浇），
We need a hole large enough for the tree(改为否定）
We _don't__ _need___a hole large enough for the tree

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第一题答案是B/D。
简单分析一下：need这个词既可以做实义动词，也可以做情态动词。做实义动词时否定形式要加does not,但need后要加to,也就是说A选项加上to就是正确的。做情态动词时，否定式就直接在后边加not.
第二题填don't need。
解释同上。
希望对你有帮助。...

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第一题答案是B/D。
简单分析一下：need这个词既可以做实义动词，也可以做情态动词。做实义动词时否定形式要加does not,但need后要加to,也就是说A选项加上to就是正确的。做情态动词时，否定式就直接在后边加not.
第二题填don't need。
解释同上。
希望对你有帮助。

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第一题 needn‘t
第二题don’t need
情态动词与实意动词的区别