Meaning: This means to move the toothbrush in a circle to clean your teeth.
Choice of Words:Circular means in the shape of a circle. Motion means movement.
Alternative Expressions
She scrubbed her teeth in a back-and-forth motion.
Meaning: This means that the girl cleaned her teeth by moving the brush back and forth. It's like when you saw something back and forth, but instead of sawing wood, she's sawing her teeth with a toothbrush.
Choice of Words:She is a pronoun that refers to the person doing the action, in this case, the girl. Scrubbed is a verb that means to clean something by rubbing it hard. Her is a possessive pronoun that shows that the teeth belong to the girl. Teeth is the plural form of tooth, which are the hard white structures in the mouth used for biting and chewing. In is a preposition that shows the position of something. A is an indefinite article that refers to one of something. Back-and-forth is an adjective that describes a motion that goes back and forth. Motion is a noun that refers to the act of moving. So, when you put all these words together, you get the sentence "She scrubbed her teeth in a back-and-forth motion," which means that the girl cleaned her teeth by rubbing them hard in a back-and-forth motion.
She flossed her teeth with a gentle up-and-down motion.
Meaning: This means that the girl cleaned the spaces between her teeth by moving the floss up and down. It's like when you move a yo-yo up and down, but instead of playing with a yo-yo, she's cleaning her teeth with floss.
Choice of Words:She is a pronoun that refers to the person doing the action, in this case, the girl. Flossed is a verb that means to clean the spaces between your teeth with a thin piece of thread. Her is a possessive pronoun that shows that the teeth belong to the girl. Teeth is the plural form of tooth, which are the hard white structures in the mouth used for biting and chewing. With is a preposition that shows the relationship between two things. A is an indefinite article that refers to one of something. Gentle is an adjective that describes something that is soft or kind. Up-and-down is an adjective that describes a motion that goes up and down. Motion is a noun that refers to the act of moving. So, when you put all these words together, you get the sentence "She flossed her teeth with a gentle up-and-down motion," which means that the girl cleaned the spaces between her teeth with a thin piece of thread in a gentle up-and-down motion.