請問什麼時候不用加” the”??

指定的時候用the !!!!!
eg. the sun
由於sun 得一個,so係指定的

the 是屬 Articles（冠詞）

the – 放在獨一無二的東西前面：the sun, the moon, the earth.

the - 放在最高級形容詞前面：the youngest girl, the strongest boy, the thickest book.

the - 放在河流，海洋，島嶼，山脈的名稱前面：the Yellow River, the Pacific Ocean, the Hawaiian Island, the Himalayas.

the - 放在之前已提及過的人物或物件前面：
I saw a girl this morning. The girl is David’s sister.

*個別獨特例子(並不需要加上任何冠詞)
星期：Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday.
月份：January, February, March, April, May, June, July, August, September, October, November, December.

例如在一句句子中，只有一個主語如map，就不用加「the」.
If we talk about the names of the buildings such as hotels, namesof so me locations, musical instruments with the verbs Lwarn and Play, ordinal numbers like First and Second... We will use 「the」.

當你遇到名詞就要加 'the' !!

例:
the moon
the fish
the table
the pencil case
..............