大雪｛おおゆき｝によって、電車｛でんしゃ｝は３時間｛じかん｝以上｛いじょう｝も遅れました｛おくれました｝。

彼女｛かのじょ｝が怒る｛おこる｝のも当然｛とうぜん｝だ。

I read a few grammar explanations that suggested in these contexts も serves as
an “exclamation” marker, but I’m confused about these usages of も. Could you
explain this usage of も? Could も be replaced by another particle in these
cases, and if so, how would the meanings change?

ーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーーー What is the difference in nuance
between the following sentences? Are either more common than the other? Are
there certain contexts you would use one over the other?

私｛わたし｝は犬｛いぬ｝も猫｛ねこ｝も好き｛すき｝です。

私は犬と猫が好きです。
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2018-05-06T19:29:04.973
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question
grammar particle-と particle-も
も particle — “exclamation” special usage, も/と nuance distinction
I believe it'd be more accurate to conceptualize も as an emphasis marker than
as an exclamation. For instance, I'd translate the two sentences in your last
example as

> I like **both** dogs and cats.

and

> I like dogs and cats.

respectively.

> 彼女が怒るのも当然だ。

The も here isn't an exclamation. It's being used to add the nuance of "in
addition to whatever other thing was 当然."

> 大雪によって、電車は３時間以上も遅れました

Similarly, here it's being used to indicate that the speaker perceives this as
having been a long time. If they wanted to highlight that they didn't believe
three hours to be that long they'd use しか+neg verb.
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2018-05-06T23:49:09.003
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answer