Type:E-book, Lesson Plan
" Lesson 25: Present Perfect Use contains instruction on exactly how to use the present perfect. There is one practice exercise so that you can reinforce the skills you just learned.
This lesson is part of the Athabasca University Mobile ESL course."
Keywords:verb verb form base form -s form -ing form past form past participle be auxiliary verb do have imperative present simple affirmative statements negative statements questions past simple present continuous past continuous present perfect continuous present perfect past perfect modal verb can could may might will shall would must should have to need to needn’t be able to ought to have got to had better be going to use to simple formation continuous formation perfect formation non-perfect
Access Privileges:Public - Available to anyone
License Deed:Creative Commons Attribution 3.0