Roger Bacon

On the Eye

Latin Grammar: Purpose Clauses
Deinde pars eius secunda est spissior, ut dicit Avicenna, et expanditur sperice usque ad anterius oculi, habens foramen in medio sui anterioris parties, ut species lucis et coloris et ceterorum visibilium valeant

Purpose clauses are subordinate clauses that explain the object of the action that occurs in the main clause. Whereas English generally uses an infinitive to express purpose, Latin uses ut and the subjunctive. Negative purpose clauses are expressed with ne. Translate the following English phrases into Latin to practice using purpose clauses.

1.    We have eyes to see. 

2.    We read books to learn. 

3.    He did this to be freed. 

4.    He came to teach us. 

5.    They listen so that they may not disobey. 

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