Yesterday is cooler than today.
Helen is thinner than Joan.
That black shirt is smaller than this blue shirt.
可以講解一下么？
可以。
This is the cleanest room i have ever seen. (that room, dirty) That room is dirtier than this room.這是我曾經(jīng)看到的最干凈的屋子。那屋子比這間屋子臟。由于要求仿照例句，所以這里要變成比較級(jí)，以下同。
Today is the hottest day in the month. (Yesterday, cool) Yesterday is cooler than today.今天是這個(gè)月最熱的一天。昨天比今天涼爽。
Joan is the fattest girl in the class. (Helen, thin)Helen is thinner than Joan.瓊是班里最胖的女孩。海倫比瓊瘦。
This blue shirt is the biggest in the shop.(that black shirt,small)That black shirt is smaller than this blue shirt.那件藍(lán)襯衫是這家店里最大的。那個(gè)黑襯衫比藍(lán)襯衫小。