Unit 3.1: London for free

In this unit we are working with future wit two similar forms: Present continuous or GOING TO.
As you can see from the grammar section (p. 132) the difference is rather small and it's only depending on the inner meaning:

• I'm going to have dinner with my parents next weekend (your plans, your intention, NOT arrenged yet or not fixed but something I want to do in a close future)
• I'm having dinner with my parents (everything is arranged, with a fixed time/place)

On the book they say that GOING TO is more common when other people are not involved in the action but I prefer to explain that this form is connected to WANT TO, which indicates your intention, what you want to do in a close future.

If you want to practise you can do these exercises: exercise 1    exercise 2    exercise 3

To know something about London and practise with listening you can watch these videos:

10 popular sights in London    10 things to know about London    London (with subtitles)

You can also go to this link with a lot of material about London for English students; click here