College English Grammar: Grammar and Writing By Zhu XiangjunUnit 11 Clause: Adjective clauses Grammar: Adjective clauses Writing: Correcting: Lack of Subject-Verb Agreement Rewriting: Inter-sentence coherenceClauses There are two kinds of clauses: main clause and subordinate clause. A main clause (or a simple sentence) contains a complete thought and therefore can stand alone as a sentence. Every sentence must contain at least one main clause (MC). We waited for half an hour. Nothing happened. W