So is often used with adjectives and adverbs which are
followed by (that) and a sentence showing a result or
an effect. So can also be used with adjectives and noun
phrases. When this happens, the grammar for noun phrases
with singular countable nouns is unusual.
1. | so with an adjective + a singular countable noun | |
When so is used with an adjective and a singular so + adjective + a / an singular countable noun + That was so difficult a test (that) almost no one He gave so unusual an answer (that) we weren't sure of what he meant. Sentences such as the above seem "forced" and That was such a difficult test (that) almost He gave such an unusual answer (that) we |
||
2. | adjectives and plural nouns | |
So cannot be used with an adjective and a plural Those were such delicious cookies (that) Ana and Brigitte are such fast runners (that) |
Special Note: That is usually not omitted in sentences
such as the above.