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Special Topic V: Special Topic V:

Special Topic V: - PowerPoint Presentation

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Uploaded On 2017-04-08

Special Topic V: - PPT Presentation

Defining and Non defining Modifiers 1 Use of commas Compare the following A Modifier is a noun My cousin Sam lives in London i My cousin Sam lives in London ii The ID: 535142

modifier defining clause fig defining modifier fig clause studied point information commas noun relative phrase singular matrix solution equation

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Slide1

Special Topic V: Defining and Non-defining ModifiersSlide2

1. Use of commasCompare the following:A. Modifier is a nounMy cousin Sam lives in London.(

i

*) My cousin, Sam, lives in London.

(ii) The

eigenfunction

g(x

) is plotted in Fig.1.

(ii*) The

eigenfunction

,

g(x

), is plotted in Fig.1.Slide3

B. Modifier is a participle clause(iii) The form of the cracks found in this material depicted in Fig. 2 is similar to that studied by Chu.(iii*) The form of the cracks found in this material, depicted in Fig. 2, is similar to that studied by Chu.Slide4

C. Modifier is a prepositional phrase(iv) A singular matrix like M cannot be diagonalized.(iv*) A singular matrix, like M, cannot be diagonalized

.Slide5

D. Modifier is a relative clause(v) The solution to this equation that appears above is unstable.(v

*) The solution to this equation, which appears above, is unstable.

(vi) The critical point at which

dF/dx

vanishes is studied in detail below.

(vi*) The

critical

point,

at which

dF/dx

vanishes,

is studied in detail below.Slide6

Main point In general, a modifier (word, phrase or clause) that is separated from that which it modifies by commas presents non-defining information, while one that is not separated by commas presents defining information. In the first case, the information is unessential in identifying the thing in question, whereas in the second case it is essential. Note that the meaning of the sentence can depend critically on the difference between these.Slide7

2. Relative noun clauses: that vs. whichRule: In general, a defining relative noun clause must be introduced by that, while a non-defining one should be introduced by which.