这不是完整句子,没有谓语.that后面所有成分都修饰task
that cannot be efficiently or effectively completed:是定语从句,that是先行词,cannot be是从句谓语,completed是表语,efficiently or effectively做状语,这里修饰表语
这不是完整句子,没有谓语.that后面所有成分都修饰task
that cannot be efficiently or effectively completed:是定语从句,that是先行词,cannot be是从句谓语,completed是表语,efficiently or effectively做状语,这里修饰表语