Question

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

Answer 1

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

Answer 2

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。

追问

We take good care of the old in our country(保持句意不变We look ___the old __in our country

追答

We look _after__the old _well_in our country

Answer 3

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

追问

什么时候need用情态动词什么时候用行为动词 如果后面有动词那么我要用need to 还是need

Answer 4

1 B与D 相同，就是这个答案，即needn't
2 don't need

追问

第二题里的need 是作为行为动词那么应该是don't need to 吧 为什么是don't need

追答

因为后面不是接动词呀，故不用TO

Answer 5

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

Answer 6

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