topsail

这个是选D the name of which吧句子的主干是 His boat is famous.然后中间是有一个非限制性定语从句，来修饰这个boat，定语从句的先行词是boat如果用B的话，应该是whose name, 因为whose代替了 the boat"s whose name = the boat"s name 那艘小船的名字His boat, whose name is topsail , is famous. 他的小船，名字为topsail的小船，很有名。选择D是因为 the name of which里面的which是代替了the boat, 也就是相当于the name of the boat 船的名字His boat,the name of which is topsail,is famous

4

d

直接变成：His boat is famous，the name of which is topsail.

B will 后接动词原形.

他的船叫做" TOPSAIL" 很出名.

中间部分是插入语，中间的也是一句简单句，主系表结构：主是：thename,ofwhich是定语，is是谓语，Topsail是表语。