working和helpful分别怎么用,hard
由题意可知:从词法上讲heIpfuI,和hard-working都是形容词。从词意上讲:hard-working是勤奋的,卖力的,它在句子中往往作定语,后面跟名词。
My mother is a hard-working and well spoken woman.
句中hard-workin9作定语,修饰woman
helpful是有帮助的,有力的,它在句子由往往作表语。
To read a lot is helpful to the students.
句中helpful作表语