What is the Meaning of "で" in this sentence? マイクは冬休みでわくわくしています。 The sentence: > Is it "Mike is thrilled _for_ winter vacation"? If I change it to **** , does it become "Mike is thrilled in winter vacation"? I learned that "" can mean **in** , e.g. "I make food **in** the restaurant", **** ; **at** , "I'm **at** school", **** ; or **by** , "I will go to school **by** car", ****

Using or in the sentence won't change the meaning. Both would be understood as _Mike is excited **because of** winter vacation_.

Both and can mean a reason or cause. The following is from the entry . All the used here can be replaced by without changing the meaning (much).

> 6forwith
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> She blushed for shame.
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> He danced for [with] joy.
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> They shivered with cold.
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> They were suffering from hunger.
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> We were startled by the alarm.

On the other hand, ( _He died of cancer_., is used for a cause) can't be ×. So it ultimately depends on the verb whether / is used.

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BTW is not acceptable. It should be .