wǒ xīnlǐ tiántián de. Receiving my friends letter gave me a warm， Zhè bēi guǒzhī tài tián le， Zhèxiē pútao yòu tián yòu hǎochī. These grapes are sweet and delicious. 又…又… combines two qualities. A preference 这杯果汁太甜了。
我想加一点水， Shōu dào péngyou de xìn， wǒ xiǎng jiā yìdiǎn shuǐ. This juice is too sweet; Id like to add some water. 太甜 can express an unwanted degree. Buying fruit 这个苹果甜吗？ Zhège píngguǒ tián ma? Is this apple sweet? 吗 offers another way to ask the taste question. Feeling happy 收到朋友的信，我心里甜甜的，。
not a physical taste. ， happy feeling. This is figurative sweetness。
Tasting fruit 这些葡萄又甜又好吃。