可以省略that的情况:
1.that引导一个成分完整的宾语从句:
eg:You wouldn't believe (that)someone will buy someone's cast-offs.
宾语从句:someone will buy someone's cast-offs.为一个成分完整的句子.
eg: I think (that)you are right.
2.that引导定语从句,且that在定语从句中作为宾语.
eg:The girl (that)I love is Daisy 我爱的女孩是黛西.
that I love 作为定语从句修饰前面的girl.且 that作为这个定语从句中love的宾语.
eg:the man (that)I admire most is Bill Gates.我最崇拜的人是比尔盖茨.
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