it's

Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++it's /ɪts/ 1 XXthe short form of ‘it is’ / ‘it is’ 的缩略式 It’s raining. 正在下雨。2 XXthe short form of ‘it has’ / ‘it has’ 的缩略式 It’s been cloudy all day. 一整天阴云密布。 ► Do not confuse with its, which is the possessive form of ‘it’.不要和 its 混淆。its 是 it 的所有格形式。