NA1 - Had better versus I'd rather and Lesson 7A

In lesson 7A we are working with modals + perfect infinitive; here you are some links that might be useful:

• an explanation with some examples: click here.
• modals of deduction + perfect infinitive: click here (there is an exercise at the end)
• exercise 1      exercise 2       exercise 3

 But apart form that we've seen the difference between had better and would rather;  click here