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The imperfect tense is used for actions that: a) occurred repeatedly i.e. I used to do ballet twice a week, when I was younger. b) actions that occurred over a period of time i.e. I used to drink alcohol....

Don’t be afraid to use all the resources. Websites like sparknotes can be really good for getting your head around the main plot of the text, but make sure you don’t use this as a substitute for actually ...

There's no clear cut way to structure an English essay, so it's important that you take a little time when approaching a new question to draw up a short plan before attempting to answer it. The important ...

The Doppler effect is the change in frequency that occurs when a source is moving relative to an observer. If the source moves away from the observer, the wavelength will be increased and therefore the fr...

P wave: atrial depolarisation and subsequent contraction. QRS complex: Ventricular depolarisation and subsequent contraction. Q wave is negative due to left to right depolarisation of ventricular septum. ...