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Gerunds are the -ing form of a verb, and infinitives are the to + base form. These words can be confusing; they combine the meaning of a verb with the grammar of a noun. My father asked me to phone ...

LAST week we took up the perfect infinitive as a grammatical form that, in tandem with the main verb of a sentence, either refers to things that might have happened in the past, as in “The board seems ...