Common Mistakes : During

preposition

.BAD: After the accident, I had to stay in hospital during three months .GOOD: After the accident, I had to stay in hospital for three months

.BAD: It is difficult to concentrate during such a long time .GOOD: It is difficult to concentrate for such a long time

: ‘?During answers the question ‘When .During her stay here, she made a lot of good friends

: ‘?For answers the question ‘How long .I’ve been learning English for two years .We’ve been waiting here for almost an hour

.BAD: My uncle has known me during all my life .GOOD: My uncle has known me all my life

.BAD: The baby cried during all night long .GOOD: The baby cried all night long

: When a phrase saying ‘how long’ begins with all , there is no preposition .It rained all night .He’s been in bed all day

.BAD: During waiting for the train, I met an old friend of mine .GOOD: While waiting for the train, I met an old friend of mine

.BAD: This was my biggest problem during I was living in the United States .GOOD: This was my biggest problem while I was living in the United States