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dimly, she saw the picture of a man walking up a road
(Christie) the modal word
perhaps is not a sentence member, but if we remove it, the meaning of the
utterance will change – it will be just a statement of the fact.
Academician Shcherba states that there are some words that do not belong to
any part of speech. Prof.
Ilyish regards the words
yes
,
no
and
please
as standing
outside the part of speech system. This point of view is also supported by Prof.
Smirnitsky.
