Function Word: An

Signal key an : this signal key precedes noun or noun phrase. the word group that begins with the signal key an refers to M-code. Unlike the M-Code Signal Key an, the signal key An represents M-Code stands at the beginning of the sentnece.

Example
Look at the following sentence.
An oppossum mothers her youngs.

Signal Key
For the given sentence, figure out the siganl key an.
An oppossum mothers her youngs.

Graphic Transformation
Draw underline under M-Code that signal key an introduces.
An Oppossum mothers her youngs.



For Grammatical Approach

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