38。he was wearing __ was very uncommon in the town, a white tie.a. that b. what c. something d. which為什么選B，怎么分析呀？

熱心網友

這里是賓語從句。缺少的詞既要做引導詞又要做后面從句的主語，只能選B。如果原題改成：he was wearing a white tie，__ was very uncommon in the town。那么就可以選which了。賓語從句的時態要和主句相呼應。如果主句的謂語動詞是現在時，從句中謂語動詞的時態可不受約束；如果主句中的謂語動詞是過去時，從句中謂語動詞的時態要與之呼應,主句中的謂語動詞是過去時態，其賓語從句的謂語動詞一般也須用過去范疇中的某種時態(如過去時、過去進行時、過去將來時，過去完成時)，但如賓語從句說的是客觀真理，它的謂語動詞仍須用現在一般時.

熱心網友

他戴了一條白領帶，這對這個鎮上的人來說很鮮見！

熱心網友

he was wearing __ was very uncommon in the town, a white tie.a. that b. what c. something d. which選B沒錯啊。這個what是引導個主語從句。what指代的是后面的tie。

熱心網友

what here is used as an object as "wearing" . a white tie is 同位語