单句改错
must be
must be指一定会,准是,一定是,表不可避免性,必然会,必定会。
例:He must be there by now.他现在一定在那里了。
should be是指应该是,应当是
例:They should be there by now.他们现在应该已经到那了。
例:He must be there by now.他现在一定在那里了。
should be是指应该是,应当是
例:They should be there by now.他们现在应该已经到那了。
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