How to Analyze Sentence Structure: 'Make a Note of What You Think is of Great Importance'

This sentence structure can be analyzed as follows:

• Main clause: 'make a note'
• Object clause: 'what you think is of great importance'

The object clause is a noun clause introduced by the conjunction 'what', acting as the object of the verb 'make'. Within the object clause, there is another embedded clause, 'what you think', which functions as the subject of the object clause.