the traditional goal of science is to discover how things ar

the traditional goal of science is to discover how things are ,not how they ought __
a to b tobe c not touch d not do
ought to 是助动词不能做谓语是吗

雪狼皇后的男朋友 1年前已收到2个回答举报

爱上这份爱花朵

共回答了22个问题采纳率：90.9% 举报

选b ought to是情态动词

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雪狼皇后的男朋友举报

哦是情态动词不能做谓语是吗

举报爱上这份爱

情态动词是不能单独做谓语的，需要和后面的动词构成合成谓语

tongpai 幼苗

共回答了124个问题举报

选b。
The traditional goal of science is to discover how things are ,not how they ought _to be_.
当句子中谓语动词部分含有be动词或表示完成式的助动词havehashad时，用ought to说明时要保留be动词或have.
ought to是情态动词，与实意动词共同作谓语，构成符复合语。

1年前

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