Specifically . . . use a comma: 1. After a long introductory phrase. Example: Usually, it is NOT necessary to use a comma after short introductory prepositional phrases. Example: 2. After an introductory phrase made up of a verb and any modifiers “to” plus that tells why. (“infinitive”) Example: Use a comma even after a short + verb phrase that answers why. “to” Example: You can tell you have this kind of introductory + verb phrase when you can put the words “to” “in in front of the phrase. order” Example: Be careful! Not all introductory phrases tell why. “to” 3. After an introductory clause that answers when? where? why? how? to what degree? is a group of words with a subject and a verb.) (A “clause” Examples:
Specifically . . . use a comma: 1. After a long introductory phrase. Example: Usually, it is NOT necessary to use a comma after short introductory prepositional phrases. Example: 2. After an introductory phrase made up of “to” plus a verb and any modifiers (“infinitive”) that tells why. Example: Use a comma even after a short “to” + verb phrase that answers why. Example: You can tell you have this kind of introductory “to” + verb phrase when you can put the words “in order” in front of the phrase. Example: Be careful! Not all introductory “to” phrases tell why. 3. After an introductory clause that answers when? where? why? how? to what degree? (A “clause” is a group of words with a subject and a verb.) Examples: