✔ 最佳答案
" many a " :
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-- is used to indicate a large number of something.
-- Taking "a large number of something" as ONE single object (如 '一大班人' ... ) ,
"many a" takes a singular noun, which will be followed by a singular verb.
eg. Many a politician has promised to make changes.
[ 'Many a politician' is followed by a singular verb 'has' ]
Likewise, your given sentence should be:
Many a boy and many a girl (has seen) it since then.
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" Each boy and each girl " :
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-- "2 nouns modified by 'each' " joined by "and" is (commonly) considered INDIVIDUALLY and thus taking a singular verb. (recognized in 1762)
There can be an exception to the rule : using a plural verb for 2 nouns modified by "each".
Nevertheless, "the singular verb" is more common...
∴ your sentence should be :
Each boy and each girl (is) here in the classroom now.
≡ Each boy (is) here and each girl (is) here in the classroom now
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"many a" 和 "more than one" :
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a)"many a" = 很多 / 不少
b) "more than one" --
多於 1 item , 可以是 2, 3, 4, or more; 但通常不會太多
∴ "many a" 和 "more than one" 意思 不一樣