A-me-ri-can has four syllables.
aMERican
Menu is stressed on the first syllable.
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There is only one syllable in the standard American English pronunciation of goals.
The accent syllable of "crayon" is typically on the first syllable, pronounced as "CRAY-on." Some regional variations may emphasize the second syllable, pronounced as "cray-ON," but the first syllable is generally the most common in American English.
I believe that in American English the accent is in the middle (the second syllable), while in British usage the accent is in the beginning of the word (the first syllable). American: lyooTENant. British: LYOOtnant.
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All syllable emphasis depends on pronunciation. If you pronounce the word in standard American English, then the emphasis is on the second syllable. Try saying it e-VAL-u-ate.
shoot,
In the word "tomato," the stress can vary depending on the dialect. In American English, the stress is typically on the second syllable: to-MA-to. In British English, the stress is often placed on the first syllable: TO-ma-to.
One.
The first syllable of "photo" is stressed and the second syllable is unstressed. The lack of stress on the second syllable has the consequence that the "t" fails to be aspirated and in American English is pronounced as a flap. You can contrast this with the word "Plato", which has some low level stress on the second syllable, causing the "t" to be aspirated and preventing it from becoming a flap.