情态动词的英文：
[Grammar] a modal (verb)

参考例句：

"Can" is a modal verb.
Can是一个情态动词。

used with a modal v; formal if placed immediately after the modal v
与情态动词连用;若紧接情态动词之后则更文雅

You can never use two modals together.
两个情态动词不能同时使用。

You can use negative words with modals to make negative clauses.
你可以将情态动词与否定词连用构成否定句。

There are various new introductions including modal verbs, auxiliary verbs and word order.
现在有了一些新的动词分类：情态动词、助动词和词序。

"They must have arrived there on time, mustn't they?( haven't they?)"
他们一定已经准时到达那里了是吧?(当主句中的情态动词表示推测时,附加疑问句可采用两种形式)

grammar是什么意思：
n. 语法；语法书

Not in accord with the rules of a prescriptive grammar.
不合语法的不符合规定的语法规则的

That is not, properly speaking, a dictionary, but a grammar.
严格说来;那不是一本词典,而是一本语法书。

Bad grammar tends irk teachers.
语法不好常使老师生气。

modal是什么意思：
n. 情态动词；莫代尔
adj. 模式的；情态的

Modality has three types: epistemic modality, deontic modality and dynamic modality.
情态有三种：推测情态、义务情态、机能情态。

Exactly: and that is the ineluctable modality of the audible
正是这样。这就是可听事物无可避免的形态。

What's is Modal?
莫代尔是什么？

verb是什么意思：
n. 动词

A verb form in the present tense.
现在时态的动词形式

The verb is in the present tense.
这个动词使用的是现在时态。

Dynamic verbs are verbs that refer to actions. Stative verbs are verbs that refer to states, ie to a relatively stable state of affairs.
动态动词是表示运动状态的动词，而静态动词则是表示一种相对静止状态的动词。