这个句子是个倒装句,正常语序是watchtowerisalongthewall.最后的s是表示复数形式,所以与is不像对应.把is变成are或者去掉最后的S.
相关知识
陈述句中出现的几种倒装句
1、主谓倒装
(1)Long,longagotherewasawarbetweenthebirdsandthebeasts.
(2)OnceuponatimethereweresixblindmeninIndia.
(3)“Comealong,then.”saidthebird.
(4)…buttowardtheendtherecametheterriblestorm…
2.表语倒装
(1)SuchwasAlbertEinstein,asimplemanofgreatachievments(全倒装句)
(2)Insidethepyramidsaretheroomsforthebodiesofkingsandqueens.
(3)Averyreliablepersonheis.(主语是人称代词时,主谓不倒装)(《英语分类句型》P400)
3.宾语倒装
(1)Manyhappyhoursshehadspentplanningforsomethingniceforhim.
(2)Twenty-onedollarstheytookforit.
(3)Notasinglemistakedidhemake.
(4)Onlyadictionaryheneverforgetstobringhere.
宾语在前时,多数属于强调部分,句子一般不加助动词,偶尔也有助动词出现,如例句(3).
4.复合句中的倒装
(1)ItakebackwhatIsaid.
(2)…andtheshipwouldhavesunkwithallboardhaditnotbeenforthecaptain.要是没有那位船长,就会连船带人都沉没了.
(3)WereIyou,Iwouldgowithhim.
(4)Proudasthesenoblesare,heisafraidtoseeme.
(5)Notonlywaseverythingthathehadtakenawayfromhim,butalsohisGermancitizenship.
(6)Hardly(Scarcely)hadhesatdownwhenthetelephonerang.
(7)Theharderyouwork,thegreaterwillbeyourachievement.
5.其他倒装
陈述句中为了保持句子平衡或为了强调表语、宾语、状语等成分,或使上下文紧密衔接时,使用倒装句.
(1)Onthewallisablackboardonwhichwerewrittensomewords,“Itisnousesittingherewithoutlisteningtome.”(定语从句中,主语的同位语太长)
(2)Theyenteredtheclassroom,infrontofwhichsatanaughtyboy.(使上下文紧密衔接)
(3)GoneforeverarethedayswhentheChinesepeoplewerelookeddownuponbytheforeigners.(主语加上定语后太长而表语短,所以表语在前面,强调句子平衡)
这个题应该是表语倒装的情况