It's a worksheet with 8 important inventions with their dates to work on the present perfect. The idea is to first hide the text and just look at the number and the image and ask how long have we had the telephone? The student then needs to use the present perfect with for or since and make a guess: We've had the telephone since 1950/for 66 years. 

how-long-have-we-had-clt-communicative-language-teaching-resources-fun-_88274.doc

How long have we had?

how-long-have-we-had

It's a worksheet with 8 important inventions with their dates to work on the present perfect. The idea is to first hide the text and just look at the number and…