Final answer:
The letter W is primarily a consonant but can act as a vowel when paired with certain vowels. It's one of the few letters in the English alphabet that can serve different roles in word construction, similar to the letters Y and sometimes U.
Step-by-step explanation:
The main answer to the question 'What letter in the alphabet does a W start with?' is that the letter W in the English alphabet is primarily known as a consonant. However, it can sometimes act as a vowel in combination with other vowels, such as in the two-letter teams aw, ew, and ow. The concept of variable vowel sounds is slightly complex and applies to a few other letters as well, including Y and sometimes U.
Our alphabet has twenty-six letters. Letters like A, E, I, and O are always vowels, while letters like Y, W, and U can function as either vowels or consonants. The rest of the letters in the alphabet are consistently consonants.
It is also important to note that the letter U is usually a vowel but can act as a consonant when it comes after the letter Q, spelling the W sound, as is the case in words like 'quick'.