present and past perfect tense worksheets pdf
TChon 15 PRESENT PERFECT AND PAST SIMPLE TENSE.doc
Ngày tải lên :
08/07/2013, 01:27
... 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...
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PAST PERFECT TENSE
Ngày tải lên :
18/08/2013, 02:10
... PAST PERFECT TENSE (THÌ QUÁ KHỨ HOÀN THÀNH)
I/ Use (Cách dùng)
Past Perfect Tense được dùng để diễn tả:
1. Một hành động xảy ra trước ... last night.
S
1
+ Simple Past + after + S
2
+ Past Perfect
EX: George went to bed after he had seen this movie last night.
S
1
+ Past Perfect + when + S
2
+ Simple Past
EX: When I came back ... khứ.
EX: John had traveled to England before 2000.
2. Một hành động xảy ra trước một hành động khác trong quá khứ.
S
1
+ Past Perfect + before + S
2
+ Simple Past
EX: George had seen this movie...
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passive - present and past
Ngày tải lên :
31/08/2013, 02:10
... 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...
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cephalopods present and past
Ngày tải lên :
08/04/2014, 02:02
...
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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Grammar review : simple present and simple continuos tense potx
Ngày tải lên :
27/06/2014, 18:20
... watch
has
Where does his sister live?
doesn’t rain
closes
,'!
REVIEW: Simple present and
simple continuous tense
â Copyright: Thudominh
7&!!+%"!%+!8!%'&%
1. ... t mt hnh động đang xảy ra ở hiện tại nhưng không nhất thiết
ở lúc nói.
He is teaching French and learning Greek.
ã
Din t mt hnh ng ó sp xp thc hiện trong tương lai gần.
We are going to Đalat...
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Tài liệu Present perfect and past doc
Ngày tải lên :
19/01/2014, 17:20
... 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 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 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....
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Sustainable Energy Harvesting Technologies Past Present and Future Part 7 pdf
Ngày tải lên :
19/06/2014, 08:20
... 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 into account ...
relating to the thermal domain and represent heat powers Q
c
at the cold side (15), and Q
h
at
the hot one (16), while the last one comes from the electrical domain and represents an
electrical ... operation and are crucial for
comprehensive understanding of heat to electric energy conversion. After that an
analytical description of the heat flux and power generation in TEMs is presented,...
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Sustainable Energy Harvesting Technologies Past Present and Future Part 9 pdf
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 ... 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. 14....
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Sustainable Energy Harvesting Technologies Past Present and Future Part 14 pdf
Ngày tải lên :
19/06/2014, 08:20
... 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 ... 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 ... integrated rectenna and DC-DC boost converter
circuits.
1.6.1 DC-DC boost converter design theory and operation
The DC-DC boost converter design theory and actual implementation are presented in...
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Unit 13. Present perfect and past (1) doc
Ngày tải lên :
22/06/2014, 21:20
... 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. ...
They went out after lunch and they’ve just come back. (= they 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...
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Unit 14. Present perfect and past (2) doc
Ngày tải lên :
22/06/2014, 21:20
... 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 khi ... golf vào ngày nghỉ mùa hè năm rồi.
Thì
present perfect luôn có một sự liên hệ với hiện tại. Xem Unit 7, Unit 8, Unit 9,
Unit 10, Unit 11, Unit 12. Thì past simple chỉ diễn đạt một sự việc đã ... Ví dụ như: Today, this week, since 1985.
Past simple (did)
I did a lot of work yesterday.
Hôm qua tôi đã làm nhiều việc.
Chúng ta dùng thì simple past khi đề cập tới một thời điểm đã kết thúc...
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