
"the sun contains 99.85% of the mass in the solar system" "the Earth revolves around the Sun"
"the shingles were weathered by the sun and wind"
"insolated paper may turn yellow and crumble" "These herbs suffer when sunned"
误 A sun rises in the east.
正 The sun rises in the east.
析 像sun这样世界上独一无二的自然物前须用定冠词the。只有在sun前有形容词修饰时才可加不定冠词a,起描绘作用。