Comparing two things with より
Compare two things without adding an English-style “-er” to the adjective.

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In this pattern, the Japanese adjective keeps its usual form. Where English uses “more expensive” or “bigger,” the Japanese comparison is expressed through より and the rest of the sentence.
Use A は B より + adjective. より follows the comparison standard, B. 車 は 自転車 より 高い です means “The car is more expensive than the bicycle.” A structural guide is “The car, compared with the bicycle, is expensive.”
Track the particle roles: は marks A as the topic, and より marks B as the comparison standard. Swapping which item has each role reverses the comparison. “More” does not necessarily mean “better”—it can mean more expensive or more difficult.
English changes “big” to “bigger,” or adds “more” to “expensive.” Japanese can use the same 大きい or 高い with より. Translate the comparison naturally rather than leaving out the English comparative.
Examples
車 は 自転車 より 高い です。
The car is more expensive than the bicycle.
日本語 は 英語 より 難しい です。
Japanese is more difficult than English.
けんさん は マリア より 大きい です。
Ken is bigger than Maria.
犬 は 猫 より 好き です。
I like dogs more than cats.