[මෙම පාඩම පසුව සිංහලට පරිවර්තනය කර, පළ කරනු ඇත!]

{This Lesson would be translated into Sinhalese & published later!}

When two sentences are joined to form a complex sentence one of them becomes the Principal Clause and the other the Subordinate Clause.

A Complex Sentence: The teacher said that I was improving in English.

# There are certain rules about the agreement of the tenses in these two clauses.