past continuous and past simple exercise pdf

... same time in the past. Eg. Mark was reading a book and Tony was watching television. BE CAREFUL!!!! The past continuous and the past simple are often used together. The past simple interrupts ... action of the past continuous. Eg. I was watching television when my friend arrived. BE CAREFUL!!!! The past continuous and the past simple are often used together. The past simple interrupts ... at the same time in the past. Eg. Mark was reading a book and Tony was watching television. We use the past continuous to talk about an action that started in the past but not finished at...

Ngày tải lên: 31/08/2013, 01:10

... load and constant temperature gradient ∆T. 4 Modeling and Simulation of Thermoelectric Energy Harvesting Processes Piotr Dziurdzia AGH University of Science and Technology in Cracow Poland ... Peltier effect Q c1 and Q h1 , Joule heat Q c2 and Q h2 , heat conduction Q c3 and Q h3 . In case of the Joule heat it is assumed that one half of it dissipates at the cold side and the other half ... Sustainable Energy Harvesting Technologies – Past, Present and Future 116 resistive load R L , the voltage V S forces a Peltier current I flow, and in consequence there appears a Joule heat...

Ngày tải lên: 19/06/2014, 08:20

... Circuits and Systems, vol.2, no.4, pp.251-259, 2008. 168 Sustainable Energy Harvesting Technologies – Past, Present and Future 14 Sustainable Energy Harvesting Technologies: Past, Present and Future At ... Energy Harvesting Technologies – Past, Present and Future 10 Sustainable Energy Harvesting Technologies: Past, Present and Future 4. Hybrid flexible energy harvesting and energy storage The proposed ... Technologies – Past, Present and Future Wearable Energy Harvesting System for Powering Wireless Devices 5 Barbic et al. (1999), rated voltage at about 1.5 V and capacity of ≈ 30 mAh) in prototype and to...

Ngày tải lên: 19/06/2014, 08:20

... 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). Theoretical and Experimental Investigation ... temperature sensor with WLAN at 2.4 GHz (ISM band). An ISM band sleeve antenna is used for the transmission. Using the cellular band rectenna shown and discussed in Section 2.5.1, at least 3.14 ... Harvesting Technologies – Past, Present and Future 254 The transmitter consists of one-chip microcomputer (MCU) PIC16F877A and wireless module nRF24L01P for the control, and MCU can be connected...

Ngày tải lên: 19/06/2014, 08:20

Ngày tải lên: 27/07/2014, 15:20

Ngày tải lên: 27/07/2014, 15:20

... Present continuous and present simple Unit 3. Present continuous and present simple (1) A Hãy nghiên cứu các lời giải thích và so sánh các ví dụ sau: Present continuous (I am doing) ... vất vả thật” “Ừ, mình có nhiều việc phải làm quá.”) Xem thêm UNIT 1. Present Simple (I do) I can’t understand why he’s being so selfish. He isn’t usually like that. Tôi không hiểu tại ... rất mệt (không dùng ‘Sarah is being tired’) D Look và feel Bạn có thể dùng thì present simple hay continuous khi diễn tả dáng vẻ hay cảm giác của người nào đó vào thời điểm nói: You look...

Ngày tải lên: 22/12/2013, 19:18

... Động từ be chia ở thì present continuous là I am being/He is being. You are being v.v… I’m being = I’m behaving / I am acting. So sánh các câu sau: I can’t understand why he’s being so selfish. ... Sarah rất mệt (không dùng ‘Sarah is being tired’) D Look và feel Bạn có thể dùng thì present simple hay continuous khi diễn tả dáng vẻ hay cảm giác của người nào đó vào thời điểm nói: You look ... một khoảng thời gian hạnh phúc. B See, hear, smell, taste Ta thường dùng thì present simple (không dùng continuous) với những động từ dưới đây: Do you see that man over there? (not ‘are you...

Ngày tải lên: 22/06/2014, 20:20

... vất vả thật” “Ừ, mình có nhiều việc phải làm quá.”) Xem thêm UNIT 1. Present Simple (I do) Hãy dùng thì Present Simple để đề cập tới các sự việc một cách chung chung, hay những sự việc được ... swim when they are children. (Hầu hết mọi người học bơi khi họ còn nhỏ.) Hãy dùng thì Present Simple để diễn đạt một tình huống hay trạng thái có tính ổn định, lâu dài: My parents live in...

Ngày tải lên: 22/06/2014, 21:20

Ngày tải lên: 31/07/2014, 18:20

... 4. The past continuous tense : ( thì quá khứ tiếp diễn ) _ Formation : ( công thức ) S + was / were + V-ing S...

Ngày tải lên: 30/10/2013, 14:11

... 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 ... 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 ... the party? 7. There are many clouds in the sky. It (rain) ….…… …………………………… 6. Read the passage and answer the following questions: My aunt Nhan is an actress. She must be at least thirty-five....

Ngày tải lên: 08/07/2013, 01:27

... you too tired?               Past simple & Past continuous Unit 5. Past simple A Xem xét ví dụ sau: Wolfgang Amadeus Mozart was an Austrian musician and composer. He lived from 1756 ... to her but she wasn’t looking. C So sánh thì past continuous - quá khứ tiếp diễn (I was doing) và past simple - quá khứ đơn (I did): Past continuous (đang ở giữa hành động) I was walking ... enjoyed Did you enjoy? I didn’t enjoy     Past continuous A Hãy xem ví dụ sau: Yesterday Karen and Jim played tennis. They began at 10 o’clock and finished at 11.30. So, at 10.30 they were...

Ngày tải lên: 22/12/2013, 19:18

Ngày tải lên: 08/07/2014, 22:20

Ngày tải lên: 17/07/2014, 10:00

Ngày tải lên: 08/08/2014, 23:22

Ngày tải lên: 10/08/2014, 21:23

Ngày tải lên: 11/08/2014, 12:21

Ngày tải lên: 28/08/2014, 16:40