Read and study the given sentences:

1. Our trip to Hong Kong was unforgettable.
2. Our trip to Singapore was more unforgettable than that to Hong Kong.
3. Our trip to Paris was the most unforgettable of all trips we had.

In sentence 1, the adjective is unforgettable. It talks only about one trip the speaker had. It indicates the positive degree.

In sentence 2, the adjective is more unforgettable. It talks about two trips the speaker had. It indicates the comparative degree.

In sentence 3, the adjective is most unforgettable. It compares many trips the speaker had. It indicates the superlative degree.

Read and study the given sentences:

1. Rikki finds the rubber shoes comfortable to the feet.
2. Nikki finds her pair of slippers more comfortable than rubber shoes.
3. Their mother says that among all kinds of footwear, sandals are the most comfortable.

In sentence 1, the adjective is comfortable. It talks only about rubber shoes. It indicates the positive degree.

In sentence 2, the adjective, more comfortable, compares slippers with rubber shoes. It indicates the comparative degree.

In sentence 3, the adjective, most comfortable, compares sandals with rubber shoes and slippers. It indicates the superlative degree.

Using more + adjective ending in -r or -er is incorrect.

Examples: more lovelier; more wider

Using most + adjective in -st or -est is incorrect.

Examples: most loveliest, most widest