In class, English teachers usually announce the beginning of the course with "start class" or "let's start class". Some teachers may also use "quiet, please pay attention" or "please keep quiet, we are going to start class" to attract students' attention and remind them to enter the learning state.

2. Class is over. In contrast, English teachers usually announce the end of the course with "class dismissed" or "you can leave now". Some teachers may also use the expressions "Time is up, class is over" or "Our class is over today" to tell students that a class is over.

Some teachers may also use "please pack your things and leave quietly" to let students pack their things and leave the classroom quietly. Slogans and languages used by English teachers in class and after class will vary according to personal preferences and cultural background.

Benefits of learning English:

1 can make you smarter. Some studies have found that learning a new language can improve your memory, help you make decisions, get higher scores in intelligence tests, and help you deal with and solve problems more calmly.

2, you can make more friends, because you can communicate with more people and know more people by using the new language, so you can make more friends and help you get more opportunities, such as work.

3. Academic research: A lot of academic research is published and communicated in English, and mastering English can better participate in academic research.