THEORY in a Sentence

Learn THEORY from example sentences; some of them are from classic books. These examples are selected from a corpus with 300,000 sentences, including classic works and current mainstream media. Some sentences also link to their contexts.

255 example sentences for THEORY, such as:

1. In theory, the scheme sounds fine.
2. It was a theory unsupported by evidence.
3. Consider what is involved by your theory.
4. She supports her theory with copious evidence.
5. Let us examine the implications of this theory.

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 Meanings and Examples of THEORY
Definition Example Sentence Classic Sentence
theory
 n.  doctrine or scheme of things; general or abstract principles of any science
Classic Sentence: (117 in 8 pages)
1  It is evidently the theory of some arm-chair lounger who evolves all these neat little paradoxes in the seclusion of his own study.
A Study In Scarlet By Arthur Conan Doyle
Context  Highlight   In PART I: CHAPTER II. THE SCIENCE OF DEDUCTION
2  His quiet self-confident manner convinced me that he had already formed a theory which explained all the facts, though what it was I could not for an instant conjecture.
A Study In Scarlet By Arthur Conan Doyle
Context  Highlight   In PART I: CHAPTER V. OUR ADVERTISEMENT BRINGS A VISITOR
3  Well, my theory is that he followed Drebber as far as the Brixton Road.
A Study In Scarlet By Arthur Conan Doyle
Context  Highlight   In PART I: CHAPTER VI. TOBIAS GREGSON SHOWS WHAT HE CAN DO
4  We want something more than mere theory and preaching now, though.
A Study In Scarlet By Arthur Conan Doyle
Context  Highlight   In PART I: CHAPTER VII. LIGHT IN THE DARKNESS
5  I hesitated long before I put this theory to the test of practice.
Dr. Jekyll and Mr. Hyde By Robert Louis Stevenson
Context  Highlight   In CHAPTER HENRY JEKYLL'S FULL STATEMENT OF THE CASE
6  I must here speak by theory alone, saying not that which I know, but that which I suppose to be most probable.
Dr. Jekyll and Mr. Hyde By Robert Louis Stevenson
Context  Highlight   In CHAPTER HENRY JEKYLL'S FULL STATEMENT OF THE CASE
7  As to the management of their children, his theory was much better than his wife's, and his practice not so bad.
Persuasion By Jane Austen
Context  Highlight   In Chapter 6
8  His theory and his wishes about devoting his future to teaching had made an impression on Mrs. Yeobright.
Return of the Native By Thomas Hardy
Context  Highlight   In BOOK 3: 3 The First Act in a Timeworn Drama
9  Consider what is involved by your theory.
The Adventures of Sherlock Holmes By Arthur Conan Doyle
Context  Highlight   In XI. THE ADVENTURE OF THE BERYL CORONET
10  But surely, if your supernatural theory be correct, it could work the young man evil in London as easily as in Devonshire.
The Hound of the Baskervilles By Arthur Conan Doyle
Context  Highlight   In Chapter 3. The Problem
11  I remembered your theory of the affair and tried to picture all that had occurred.
The Hound of the Baskervilles By Arthur Conan Doyle
Context  Highlight   In Chapter 8. First Report of Dr. Watson
12  The man is a striking-looking fellow, very well equipped to steal the heart of a country girl, so that this theory seemed to have something to support it.
The Hound of the Baskervilles By Arthur Conan Doyle
Context  Highlight   In Chapter 9. The Light upon the Moor [Second Report of Dr. ...
13  "That seems the most reasonable theory," said Stapleton, and he gave a sigh which I took to indicate his relief.
The Hound of the Baskervilles By Arthur Conan Doyle
Context  Highlight   In Chapter 12. Death on the Moor
14  Gregory was formulating his theory, which was almost exactly what Holmes had foretold in the train.
The Memoirs of Sherlock Holmes By Arthur Conan Doyle
Context  Highlight   In I. The Adventure of Silver Blaze
15  The medical student theory still appears to me to be the most feasible, but if you should have a few hours to spare I should be very happy to see you out here.
The Memoirs of Sherlock Holmes By Arthur Conan Doyle
Context  Highlight   In II. The Adventure of the Cardboard Box
Example Sentence: (138 in 10 pages)
16  Current feminist theory consists of several different trends.
17  This theory needs to be backed up with solid empirical data/evidence.
18  A globe-trotting, business-building commerce secretary, he operated on the theory that a good defense is a good offense.
19  The fund theory offers the reporting accountant the flexibility to define the reporting unit where the definition is most useful.
20  They've agreed in theory, but now we need to discuss practical matters.
21  Natural selection is a key element of Darwin's theory of evolution.
22  She supports her theory with copious evidence.
23  It was a theory unsupported by evidence.
24  A scientist must produce evidence in support of a theory.
25  Let us examine the implications of this theory.
26  The expert elaborates his theory from his own reason.
27  Scientists have advanced a new theory to explain this phenomenon.
28  In theory, the scheme sounds fine.
29  Dr Subroto questioned the scientific assumption on which the global warming theory is based.
30  However, the converse of this theory may also be true.