Subject-verb agreement means that your verb must be conjugated, or changed, to fit (or agree) with the subject. Subjects can be singular or plural. Think of singular and plural as mathematical ...
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Even more pragmatic uses of inversion

WE have already taken up how inverted sentences depart from the normal sentence-verb-complement pattern (S-V/C) to put the ...
IN last week's column, we looked at how inverted sentences allow us to abandon the normal subject-verb-complement (S-V/C) sequence so we can deliver the verb or its complement wherever we feel it can ...
Until recently, linguists assumed that the subject of the sentence was generated in the position immediately dominated by S. The node 'S' plays no role in the x-bar theory. Here, we will replace S ...