帮忙详细解释下就行- - 麻烦了
1.Tom has become a very good student.He is no longer the boy ___ he used to be.
a. who b.whose c.when d.what
2.Welcome to my home for dinner,children. Help_____to some chicken.I will cook some fish for you.
a.yourself b.you c.yourselves d.ourselves
1.Tom has become a very good student.He is no longer the boy ___ he used to be.
a. who b.whose c.when d.what
定语从句先行词是the boy, 在从句中系动词be后缺少表语，所以只能选who,其实最佳答案是that.
这句话还可以说成 He is no longer what he used to be.
2.Welcome to my home for dinner,children. Help_____to some chicken.I will cook some fish for you.
a.yourself b.you c.yourselves d.ourselves
固定用法： Help oneslef to sth 因为前面说了children, 所以是yourelves
1\d 在本句中做宾语
2\c help oneself to something表示客气的一种说法，在做客的情况下，可翻译为“随便用”
第一题抄错了吧he used to be 如果有he话，就不用填了，如果没有he就选a定语从句 第二题选a 固定搭配表示让人吃东西
1.B
2.C