what is difference between some and any?

[Koloberdyanko]

English Grammar Tests, Elementary Level

ESL/EFL Test #99 "a, some or any", question 7

There are ......... grapes in the fridge.

(a) a
(b) some
(c) any

English Grammar Tests, Elementary Level

ESL/EFL Test #99 "a, some or any", answer 7

There are some grapes in the fridge.

Correct answer: (b) some
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What is difference between some and any?

Koloberdyanko

[Mister Micawber]

.
Among other things, any does not work in affirmative sentences such as this; it is used for questions and negative statements.
.
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Native English teacher at Mister Micawber's