Would you like your writings to "sound" more English? A good way is to use linkers, connectors and modifiers.
These two activities will help you.(You can download them if you click here).
The first one is a list of words and their translation into Spanish. They are organized in categories.
The second one is a text about driving where you can see how these expressions work and some exercises to practise. You can correct them yourselves because the key is included.