The simple present tense is used: To express habits, general truths, repeated actions or unchanging situations, emotions and wishes: I smoke (habit); I work in London (unchanging situation); London is a large city (general truth) To give instructions or directions: You walk for two hundred meters, then you turn left. To express fixed arrangements, present or future: Your exam starts at 09.00 To express future time, after some conjunctions: after, when, before, as soon as, until : He'll give it to you when you come next Saturday. He'll give it to you when you come next Saturday. Forming the present simple with verb "to think": Notes on the third person singular: In the third person singular the verb always ends in -s : he want s , she need s , he give s , she think s. Verbs ending in -y : the third person changes the -y to -ies : fly --> fl ies , cry --> cr ies Excep