Not only.but also 倒装句____the old man to the hospital but he also paid for the medical feeA.Not only did the student sendB Not only the student sentC Not only did the student sentD The student did not only sent跪求CD不能选的原因
问题描述：
Not only.but also 倒装句
____the old man to the hospital but he also paid for the medical fee
A.Not only did the student send
B Not only the student sent
C Not only did the student sent
D The student did not only sent
跪求CD不能选的原因
答
倒装句not only开头的要用固定举行：
not only did/had ***, 因此D 不能选。
因为前面已经用了did, (或者是do),后面的动词要恢复原型。因此排除了C.
如果用的是had, 则后面要用动词的过去分词。
答
Not only...but also倒装是前面倒装后面不倒装，所以D不能选，C的话有did表示过去时，后面就应该用动词原形send
答
C项Not only did the student sent中已经有助动词DID了,所以动词SEND需要用原型.D项The student did not only sent完全不符合NOT ONLY语句（也是通用的提前副词成分的）倒装的规则.
答
send的过去式是sent
因为前面有did所以得接动词原形