You are an upper intermediate learner if you are proficient and confident in your English skills. You can sustain your opinions, clearly explain your point of view, and take turns in informal banter.

English has three kinds of articles. Definite articles, zero articles and the indefinite articles a and an. Indefinite articles are used in a number of ways. Dan challenges himself to explain some ...

Extends listening and speaking skills and strategies for study in an academic context. The fourth number of the course code shows the level of the course. For example, in course 219206, the fourth ...