viernes, 17 de abril de 2015

PRESENT PERFECT TENSE FOR THIRD GRADE ASSIGNMENT

Good evening dear students, On this lesson, we have already practiced how to use the present perfect tense in order to make statements, negative sentences or questions. Here are some higlights of this grammar spot and an exercise for further practice. Unfinished Actions We use this tense when we want to talk about unfinished actions that started in the past and continue to the present. Usually we use it to say 'how long' an action or state has continued with 'since' and 'for'. Often, we use stative verbs in this situation: I've known Karen since 1994. She's lived in London for three years. Since' and 'For' We use 'since' with a fixed time in the past (2004, April 23rd, last year, two hours ago). The fixed time can be another action, indicated with the past simple (since I was at school, since I arrived): I've known Sam since 1992. I've liked chocolate since I was a child. She's been here since 2pm. We use 'for' with a period of time (2 hours, three years, six months): I've known Julie for ten years. I've been hungry for hours. She's had a cold for a week. still, already and yet These words are often used with the present perfect tense although yet, still and already can all be used with other tenses. Just ‘Just’ is usually used only with the present perfect tense and it means ‘a short time ago’. I’ve just seen Susan coming out of the cinema. Mike’s just called. Can you ring him back please? Have you just taken my pen? Where has it gone? In the present perfect, ‘just’ comes between the auxiliary verb (‘have’) and the past participle. Yet ‘Yet’ is used to talk about something which is expected to happen. It means ‘at any time up to now’. It is used in questions and negatives. Have you finished your homework yet? The speaker expects that the homework will be finished. I haven’t finished it yet. I’ll do it after dinner. ‘Yet’ usually comes at the end of the sentence. Still ‘Still’ is used to talk about something that hasn’t finished – especially when we expected it to finish earlier. I’ve been waiting for over an hour and the bus still hasn’t come. You promised to give me that report yesterday and you still haven’t finished it. ‘Still’ usually comes in ‘mid-position’ Still is often used with other tenses as well as the present perfect. I’ve still got all those letters you sent me. Are you still working in the bookshop? Already ‘Already’ is used to say that something has happened early – or earlier than it might have happened. I’ve already spent my salary and it’s two weeks before pay day. The train’s already left! What are we going to do? ‘Already’ usually comes in mid-position.

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