内容： Learn to describe what is happening or what people are doing in simple English. Understand people’s problems and provide simple advice to help them.
Target Language Orientation & Present continuous (affirmative and negative forms) – “to be -ing”
内容： Learn to describe what is happening or what people are doing in simple English. Understand people’s problems and provide simple advice to help them.
Target Language Orientation & Present continuous (affirmative and negative forms) – “to be -ing”