Ebook English grammar in use (Fifth Edition): Part 1 includes: 1 Present continuous (I am doing); 2 Present simple (I do); 3 Present continuous and present simple 1 (I am doing and I do); 4 Present continuous and present simple 2 (I am doing and I do); 5 Past simple (I did); 6 Past continuous (I was doing); 7 Present perfect 1 (I have done); 8 Present perfect 2 (I have done); 9 Present perfect continuous (I have been doing); 10 Present perfect continuous and simple (I have been doing and I have done); 11 how long have you (been) |
