The teacher stood in front of the class, explaining the lesson.

Meaning: The teacher was teaching a lesson to the students in the class.

Choice of Words: Teacher is a person who teaches students in a school. Lesson is a period of time when a teacher teaches something new to students.

Alternative Expressions

The teacher was standing in front of the class, talking about the lesson.

Meaning: This means that the teacher was standing at the front of the classroom and was talking to the students about what they were learning.

Choice of Words: The is an article that points to a specific noun. Teacher is a person who teaches students in a school or other educational setting. Was standing is a verb that means to be in an upright position on one's feet. In front of is a preposition that means at or facing the front of something. The is an article that points to a specific noun. Class is a group of students who are taught together by a teacher. Talking is a verb that means to speak or communicate. About is a preposition that means concerning or relating to something. The is an article that points to a specific noun. Lesson is a unit of instruction in a subject that is taught by a teacher.

The teacher was at the front of the class, explaining the lesson.

Meaning: This means that the teacher was standing at the front of the classroom and was talking to the students about what they were learning.

Choice of Words: The is an article that points to a specific noun. Teacher is a person who teaches students in a school or other educational setting. Was is a verb that means to exist or occur. At is a preposition that means in or on a particular place or position. The is an article that points to a specific noun. Front is the part of something that is facing forward. Of is a preposition that means belonging to or connected with something. The is an article that points to a specific noun. Class is a group of students who are taught together by a teacher. Explaining is a verb that means to make something clear or understandable. The is an article that points to a specific noun. Lesson is a unit of instruction in a subject that is taught by a teacher.

Related Expressions