First place in the class.

Class words first grade: class, class, textbook, lecture, etc. Lesson: it is the first-class character of Chinese general specification, which was first seen in Warring States script. Its original meaning is assessment, and it is extended to detection, tax collection, labor dispatch, study and homework.

The evolution of etymology: category, form, sound and cognitive words. From the word, fruit sound "Class" comes from words, which means it is related to human language; The word "Guo", as the phonetic side of the word, indicates pronunciation. The word "fruit" has both the meaning of achievement and ideographic function, indicating the effect that has been recognized by people through practice.

"Course" refers to the proof of grades in written or oral language, or the written or oral examination on the basis of existing grades. Word combination: usually refers to the combination of a single Chinese character and other suitable Chinese characters into disyllabic or polysyllabic words, which is often used as one of the contents of Chinese practice in primary schools. But we should pay attention to names, places and proper nouns. You can't combine words.

Primary school students' word composition: dictionary edition of primary school students' word composition, new manual of primary school students' word composition, and essential reference books for primary school students? A complete manual for primary school students to form words and sentences.

Simple words: words composed of one morpheme, free monosyllabic morpheme and all disyllabic and polysyllabic morphemes can form simple words. Such as: mountains, water, sky, dichlorvos, microphones, etc. Compound word: a word consisting of two or more morphemes.