present perfect past tense exercises pdf

TChon 15 PRESENT PERFECT AND PAST SIMPLE TENSE.doc

TChon 15 PRESENT PERFECT AND PAST SIMPLE TENSE.doc

... milk. 7. He has two modern cars. He be rich. 8. My eyes 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)...

Ngày tải lên: 08/07/2013, 01:27

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The present perfect tense

The present perfect tense

Ngày tải lên: 26/07/2013, 01:27

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EXESRCISES ON PAST SIMPLE OR PRESENT PERFECT

EXESRCISES ON PAST SIMPLE OR PRESENT PERFECT

... Sentences Put the verbs into the correct tense (simple past or present perfect simple). 10 Put the verbs into the correct tense (simple past or present perfect simple). 1. He (leave / just) his ... 10. B: I (be / not) to Australia yet. Simple Past or Present Perfect Simple Exercise 3 Put the verbs into the correct tense (simple past or present perfect simple). 1. A: (you / be / ever) to ... but we (have / not) time to talk then. Simple Past or Present Perfect Simple Exercise 2 Put the verbs into the correct tense (simple past or present perfect simple). 1. A: I (cycle / just) 50 km....

Ngày tải lên: 15/09/2013, 00:10

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the present perfect tense + exercise

the present perfect tense + exercise

... features of the mass media. - Prepare for the next lesson. Part C. listening 3. The present perfect tense in passive voice E.g. I have prepared this lesson. This lesson has been prepared ... => make => live => come => stop => worry => Write the – PAST PARTICIPLE FORM (PP) of these verbs. Write the – PAST PARTICIPLE FORM (PP) of these verbs. gone made lived come stopped worried ... new car has been bought by Mary. => That film hasn’t been seen (by them). Examples Which tense is used in the following sentences? 1. He has lost his key. 2. I have seen this film several...

Ngày tải lên: 23/10/2013, 17:11

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Tense consolidation - Present perfect

Tense consolidation - Present perfect

... unit Back Next Previous unit Advanced Language Practice Unit 4 Tense consolidation: present perfect Present perfect simple 1 Present perfect simple refers to: Recent events, without a definite ... recently. Exit Contents Exercises Next unit Back Next Previous unit Advanced Language Practice Put each verb in brackets into either the past simple, present perfect simple or present perfect continuous. Ever ... Practice Present perfect continuous 1 Present perfect continuous (progressive) can refer to a range of meanings, depending on the time expression used and the context. A state which lasts up to the present...

Ngày tải lên: 01/11/2013, 17:20

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Tài liệu Present perfect and past doc

Tài liệu Present perfect and past doc

... 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 điểm ... quá khứ ( present perfectpast 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 khi ... 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

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Sustainable Energy Harvesting Technologies Past Present and Future Part 7 pdf

Sustainable Energy Harvesting Technologies Past Present and Future Part 7 pdf

... Energy Harvesting Technologies – Past, Present and Future 120 ( ) 23 __ _ca cthhsthAlO thCu TTQR R R=+ + + (19) R th_hs is the thermal resistance represented by a heat sink and it takes ... Harvesting Technologies – Past, Present and Future 110 about tens of mV resulting from very small temperature gradients, equaling to single Celsius degrees. In fact, some presented prototypes ... thermal conductivity λ. 2 Z α ρ λ = (1) Sustainable Energy Harvesting Technologies – Past, Present and Future 124 5.1 Examples of simulations Output voltage V S from the TEG for...

Ngày tải lên: 19/06/2014, 08:20

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Sustainable Energy Harvesting Technologies Past Present and Future Part 9 pdf

Sustainable Energy Harvesting Technologies Past Present and Future Part 9 pdf

... pp.251-259, 2008. 168 Sustainable Energy Harvesting Technologies – Past, Present and Future 14 Sustainable Energy Harvesting Technologies: Past, Present and Future At 400 lux, the maximum power that the ... aqueous 156 Sustainable Energy Harvesting Technologies – Past, Present and Future 12 Sustainable Energy Harvesting Technologies: Past, Present and Future Fig. 13. Voltage across PV panel Fig. ... W/m 2 . 162 Sustainable Energy Harvesting Technologies – Past, Present and Future 10 Sustainable Energy Harvesting Technologies: Past, Present and Future 4. Hybrid flexible energy harvesting and...

Ngày tải lên: 19/06/2014, 08:20

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Sustainable Energy Harvesting Technologies Past Present and Future Part 14 pdf

Sustainable Energy Harvesting Technologies Past Present and Future Part 14 pdf

... 101-106, Kyoto, Japan, March, 2010 [5] http://www.secomtel.com/UpFilesPDF /PDF/ Agilent /PDF_ DOCS/SKYDIODE/ 03_ SKYDI/HSMS2850 .PDF (Last accessed on 13 July, 2011) [6] McSpadden, J. et al., H. (1992). ... are presented in this section. The inequality V in ≪V out defines the boost operation. In this Chapter, our boost converter concept is illustrated in Fig. 20. A small voltage, V in is presented ... rectenna circuit. This has the benefit of ensuring Sustainable Energy Harvesting Technologies – Past, Present and Future 256 The voltage of the capacitor decreases to 2V when 3.2mW is consumed...

Ngày tải lên: 19/06/2014, 08:20

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Unit 8. Present perfect (2) pdf

Unit 8. Present perfect (2) pdf

... cho cô bạn gái của anh ấy. Đó là lần thứ ba anh ấy gọi điện cho cô ấy chiều nay. Unit 8. Present perfect (2) A Hãy xem mẫu đối thoại dưới đây: Dave: Have you travelled a lot, Jane? Bạn ... chúng ta đề cập tới một khoảng thời gian liên tục từ quá khứ đến hiện tại, chúng ta dùng thì present perfect (have been/ have travelled …) Ở đây Dave và Jane đang nói về những nơi mà Jane đã đến ... hoặc He has never driven a car before. Trước giờ anh ấy chưa bao giờ lái xe. Linda has lost her pastport again. It’s the second time this has happened. (not “happen”) Linda lại làm mất hộ chiếu....

Ngày tải lên: 22/06/2014, 20:20

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Unit 13. Present perfect and past (1) doc

Unit 13. Present perfect and past (1) doc

... làm nhỉ. He lost his key (past simple) but now he has found it ( present perfect) . Anh ấy đã làm mất chìa khóa nhưng bây giờ anh ấy đã tìm ra. Thì present perfect là thì hiện tại hoàn ... 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. ... are come back now). Sau bữa trưa họ đã đi ra bên ngoài và bây giờ họ vừa quay về. B Thì present perfect không được dùng nếu không có sự liên hệ với hiện tại (chẳng hạn những sự việc đã xảy...

Ngày tải lên: 22/06/2014, 21:20

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