introductory elements

[ndexter]

Should words "Though", "However", "Unfotunately", "Usually", "Although", etc be followed by comma at the beginnign of sentences?
Thank you

 

[emsr2d2]

Should the words "though", "however", "unfortunately", "usually", "although" etc be followed by a comma at the beginning of sentences?
Thank you.

Not necessarily. It depends on the rest of the sentence. A comma will be required at some point in the sentence, but it's not always directly after the words you have quoted. "Though" and "although" would never have a comma directly after them. For example:

However, the film was lost when the family moved house.
However tall he might be, he still can't reach the top shelf.

Although I like pizza, I couldn't eat it every day.