| Present perfect: typical errors
 We don’t use since with periods of time: 
 I’velived here for most of my life.
 Not: … since most of my life.
 
 We don’t use the present simple or the present continuous when we talk about ‘time up to now’. We use the present perfect: 
 They’veknown each other since January.
 Not: They know each other since January.
 Not: They’re knowing each other since January.
 
 We usually use the present perfect simple with the first time when we’re talking about an immediate, continuing or recent event: 
 Was that the first time you’veplayed that song?
 Not: Was that the first time you play that song?
 
 See also:  
 Ever 
 Never or not … ever?  
 
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