Every and all often have the same meaning, but sentences using them are formed differently.
Compare these sentences:
"Every house in the street has off-street parking."
"All the houses have off-street parking."
"Emily has read every book in the house."
"Emily has read all the books in the house."
The difference is that every is used with a singular noun, while all is followed by "the" and a plural noun.
We do not use all to mean "everybody/everyone":
"All came to the meeting."
We say "all of us", not "every one of us":
"All of us were at the meeting."
Compare these sentences that use every day and all day:
"I go jogging every day (jeden Tag)."
"My colleague seems to eat all day (den ganzen Tag)."
Now try the exercise on the next page.
Dagmar Taylor