mixed present and past tenses exercises pdf

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Ngày tải lên: 19/06/2014, 08:20

... delivered on Sundays. 8 Macbeth was written by Shakespeare. 9 A lot of chocolate is eaten in Switzerland. 10 A lot of films are made in Bollywood. 11 Children are not permitted to drive cars. 12 Cds ... lot of money is spent in London by tourists. 31 The Altamira Cave is visited every year by thousands of people. 32 The Treaty of Lisbon was signed by twenty seven countries in 2007. 33 Massive...

Ngày tải lên: 31/08/2013, 02:10

... in the bandwidth of interest is much greater than would otherwise be the case, and by using high performance digital filters and decimation to eliminate noise outside the required passband. Oversampling ... number of taps and decimation rate. The filter can have up to 108 taps, up to 5 decimation stages, and a decimation factor between 2 and 256. Coefficient precision is 24-bits, and arithmetic ... been thought of as being baseband devices, and that integrators are somewhat easier to construct than bandpass filters. If we replace the integrators in a Σ∆ ADC with bandpass filters (BPFs) as shown...

Ngày tải lên: 31/03/2014, 21:22

... Space and Time and Mesozoic Ammonoids in Space and Time. Each of these chap- ters contains phylogenetic relationship hypotheses for major taxa (Figs. 1 and 5 in Becket and Kullman 1996, and Figs. ... Cephalopods Present and Past: New Insights and Fresh Perspectives Edited by Neil H. Landman Division of Paleontology (Invertebrates) American Museum ... brachiopods and bryozoans, and arthropods (except trilobites) in fifth position. Cephalopods are only ranked in eighth position, after other mollusk representatives (gastropods and bivalves,...

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Ngày tải lên: 11/08/2014, 12:21

... about the Past, Present and Future The most challenging and least likely tasks in the exam are the tasks that are mainly about the future (towards the bottom below), with the easiest and most ... need present tenses (in the middle). Each section is also organised so that the most typical and easiest tasks are near the top of the section. IELTS Speaking Part Two tasks about the past (Past ... Speaking Part Two tasks about the past (Past Simple, Past Continuous, Present Perfect Simple, Present Perfect Continuous, “used to” and Past Perfect) Describe a gift you gave someone You...

Ngày tải lên: 04/10/2012, 11:45

... recently, don’t you think? 6 My grandfather died 30 years ago. I (never/meet) him. 4. Fill in the blanks with modals: must - have to - ought to - used to 1. You wash your hands before meals. 2. It’s ... are weak. I wear glasses. 5. Give the correct tenses of the verbs in brackets: 1. I’m sorry you’re leaving. I hope you ….…… …………………………… (come) back and (see) ….…… …………………………… us soon 2. I think ... seventeen. In the play, she must appear in a bright red dress and long black stockings. Last year in another play, she had to wear short socks and a bright, orange-colored dress. If anyone asks her...

Ngày tải lên: 08/07/2013, 01:27

... FRIENDS Period 1: REVISION ON SIMPLE PRESENT AND PRESENT PROGRESSIVE TENSES A. Theory: 1.Review on tenses: Tenses Affirmation Negation Interrogation With Present simple S + am/ is/ are S + ... of) 3.He was busy yesterday and ……. was I. (too/ either/ so/ neither) 4. What does she look like? - She’s …… (interesting and sense of humor/ generous and helpful/ tall and thin) 5. I received a ... 6. You look very happy today. f. I’d love to. 6 - III. Put the verbs into present simple and present progressive tenses: 1. Vegetarians (not eat) meat. ………………………………………………………… 2. What you...

Ngày tải lên: 09/07/2013, 01:26

... ………………………………………………………………………………………………… TOPIC 2: OUR PAST PERIOD 8: PRESENT SIMPLE, PAST SIMPLE AND PREPOSITIONS OF TIME A. Theory: 1. Present simple and past simple: Tenses Affirmation Negation Interrogation Present simple S ... morning, Tuan and his father go jogging around Xuan Huong Lake. Hoa and her mother walked along Bui Thi Xuan Street and then visited the flower garden. Hoa liked it very much and the flowers ... weekend/ … - AT + time/ weekends/ present/ this time/ the moment/ … - AFTER / BEFORE + time - BETWEEN + time and time B. Exercises: I. Put the verbs in the present simple tense 1. We often (do)...

Ngày tải lên: 09/07/2013, 01:26

Ngày tải lên: 03/09/2013, 22:10

... “Who it has been”) Vậy thì ai làm nhỉ.      Present perfect and past (2) Unit 14. Present perfect and past (2) A Chúng ta không dùng thì present perfect (I have done) khi nói về một thời ... và quá khứ ( present perfect và past simple) qua các câu sau: Present perfect (have done) I’ve done a lot of work today. Hôm nay tôi đã làm nhiều việc. Chúng ta dùng thì present perfect ... viết sách). C Chúng ta dùng thì present perfect để đưa ra những thông tin mới (xem UNIT 7). Nhưng nếu chúng ta tiếp tục nói về điều đó, chúng ta dùng thì past simple: A: Ow! I’ve burnt myself....

Ngày tải lên: 19/01/2014, 17:20

... Past tenses (các thời quá khứ) 1. Simple Past (thời quá khứ thường): Dùng để diễn đạt một hành động đã xảy ra dứt điểm ... drove to the grocery store this afternoon. George cooked dinner for his family Saturday night. 2. Past Progresseive (thời quá khứ tiếp diễn): Thời quá khứ tiếp diễn dùng để diễn đạt: (1) một hành ... were you doing at one o’clock this afternoon? Henry was eating a snack at midnight last night. 3. Past Perfect (thời quá khứ hoàn thành): Thời quá khứ hoàn thành được dùng để diễn đạt: (1) một...

Ngày tải lên: 24/01/2014, 01:20