Present Simple & Present Continuous

We use the Present Simple to talk about habits, routines and facts that are generally true, for example 'She walks to school every day' or 'Water boils at 100 degrees'. With this tense we often add an -s in the third person singular (he, she, it), and we use signal words like always, usually, often, sometimes, never, every day and on Mondays. We use the Present Continuous (am/is/are + verb-ing) for actions that are happening now or at the moment of speaking, such as 'Look! It is raining' or 'They are playing football right now'. Common signal words for the Present Continuous are now, right now, at the moment, Listen! and Look!. When we form the -ing, there are small spelling rules: most verbs just add -ing (play → playing), verbs ending in a silent -e drop it (write → writing), and short verbs with one vowel and one consonant double the last letter (run → running, sit → sitting). For example: 'Ali usually reads in the evening, but right now he is watching TV.'