• My name is Young. I started teaching English in 2007 when I was still in high school, and I will continue teaching English in the future, although I didn’t know I would become a full-time English teacher without graduation. （⼀般现在时，⼀般过去时，⼀般将来时，过去将来时）
• I’m teaching English grammar at this moment, just like what I was doing at this time yesterday. I will be teaching this course at the same time every day for a couple of more days, as what I told you we would be doing at the very first day. （现在进⾏时，过去进⾏时，将来进⾏时，过去将来进⾏时）
• My name is Young. I started teaching English in 2007 when I was still in high school, and I will continue teaching English in the future, although I didn’t know I would become a full-time English teacher without graduation. （⼀般现在时，⼀般过去时，⼀般将来时，过去将来时）
• I’m teaching English grammar at this moment, just like what I was doing at this time yesterday. I will be teaching this course at the same time every day for a couple of more days, as what I told you we would be doing at the very first day. （现在进⾏时，过去进⾏时，将来进⾏时，过去将来进⾏时）
• Yesterday, you knew that we had learned English Pronouns, and that we would have learned English Verbs at the end of today’s lesson. Now we have almost finished learning English Verbs, and we will have learned English Adjectives and Adverbs at the end of tomorrow's lesson. （过去完成时，过去将来完成时，现在完成时，将来完成时）
• Last year, I always said that I had been teaching English for 13 years, and I knew then that I would have been teaching English for 14 years in the following year. Now I have been teaching English for 14 years, and I will have been teaching English for 15 years next year. （过去完成进⾏时，过去将来完成进⾏时，现在完成进⾏时，将来完成进⾏时）