情态动词只有一种形式。
Do Modals in English Have Tense Forms?
英语情态助动词有无时态形式?。
The famous modals in cheongsams look very a…?
著名的情态动词看起来很…借吗?。
Modals are always the first word in a verb group.
情态动词总是出现在动词短语中的第一位。
You use negative words with modals to make negative clauses.
情态动词与否定词连用可构成否定句。
You use negative words with modals to make negative clauses.
情态动词与否定词连用可构成否定句。
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