She lays a lot of emphasis on the usage of prepositions.

她把重点放在介词使用上。

Prepositions and conjunctions are particles.

介词连词是小品词。

Then ask if someone with a preposition flashcard can make a sentence including both the noun flashcard and the preposition flashcard.

然后问哪位拿着介词动画卡学能够造一将这名词介词都能用上句子。

This paper gives the kinds of complements: noun clauses which function as subject and object; tenseless embedded sentence; noun clauses governed by prepositions.

括了补语各种类型：限定补语、非限定补语介词引导补语。