A. every + singular noun
Every house in the street is the same.
every house in the street = all the houses in the street
We use every + singular noun (every house / every country etc.):
• Alice has been to every country in Europe.
• Every summer we have a holiday by the sea.
• She looks different every time I see her.
Use a singular verb after every ...:
• Every house in the street is the same. (not 'are the same')
• Every country has a national flag. (not 'have')
Every student in the class passed the exam.
All the students in the class passed the exam.
Every country has a national flag.
All countries have a national flag.
B. every day and all day
SUN
MON
TUE
WED
THUR
FRI
SAT
EVERY DAY
every day = on all days:
• A: How often do you read a newspaper?
• B: Every day.
• Bill watches TV for about two hours every evening. (= on all evenings)
also every morning/night/summer etc.
Beginning of the day
End of the day
ALL DAY
all day = the complete day:
• The weather was bad yesterday. It rained all day.
• I was tired after work yesterday, so I watched TV all evening. (= the complete evening)
also all morning/night/summer etc.
C. everybody / everything / everywhere
everybody (or everyone) (people)
• Everybody (or Everyone) needs friends. (= all people need friends)
everything (things)
• Have you got everything you need? (= all the things you need)
everywhere (places)
• I've lost my watch. I've looked everywhere for it. (= I've looked in all places)
Use a singular verb after everybody/everyone/everything:
• Everybody has problems. (not 'Everybody have')
every vs all
Every student passed. → All students passed.
Every time I see her, she smiles. → All the time, she smiles.
every day vs all day
I study every day. → I studied all day yesterday.
She works every morning. → She worked all morning.
everybody / everything / everywhere
Everybody laughed. = Everyone laughed.
Everything is expensive. = All things are expensive.
I go everywhere by bike. = I go to all places by bike.