Grammar Clinic: The REAL difference between LIE IN BED and LIE ON THE BED

"Lie in bed" literally means to sleep; it means to lie under the covers between the top sheet and the bottom sheet. It is generally about the usual bed one sleeps in. Example: All he does is to lie in bed all day. Doesn’t he get bored? It's possible to "lie on the bed," too. [...]

Grammar Clinic: The REAL difference between YEAR-OLD and YEARS OLD

If you use a noun as an adjective, it must be singular You can say, "She is ten years old." But if you use that phrase as an adjective, it becomes, "She is a ten-year-old girl." The ceiling is ten feet high. The room has a ten-foot ceiling. My 16-year-old sister is so brilliant. A [...]