English sentence pattern reference

The present perfect tense

have / has + ed + The object

        I have worked here.

have / has + been + An expression

        She has been beautiful.

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there be Sentence pattern

there be + The subject + Place adverbial

        There are forty students in our class.

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Modal verbs

can        could        may        might        should        must        have to        dare        needn't        had better        ought to        be able to

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passive

The general present tense         "be" + ed

General past tense