Dd2 is 3.0 and talks well in long sentences but her grammar is strange and us repeating it but correctly doesn't help.
Eg.
When we was walking along we sawed a swan.
When we comed in the house the Xmas cards all felled down didn't they.
I passid her a drink because she is thirsty like I am thirsty wasn't she.
Her tenses are often mixed, she will say he is for a girl, she puts ed on lots of words.
She can't pronounce sc, says gooter, skate comes out as gate, sky is guy, but she can say sausage and cake it's just the joined sound she can't do.