“Neither/nor+助动词/be动词/情态动词+主语”是倒装句。具体用法如下：
该句型必须具备3个条件：
A.上句为否定句；
B.上一句的谓语是同一种形式
C.该上句主语与下句主语不一致。
上一句是否定句,用 Nor/Neither + 助动词/ be动词 /情态动词 +主语。根据主语或时态，1）助动词分别用：do,did,does,will,have,has...2）be动词分别用: am,is ,are ,was ,were...3）情态动词可用：can,could,may,should,must,...。例如：
①--Yao Ming didn’t take part in the 30th Olympic Games.
--Nor did David.
=David didn’t take part in the 30th Olympic Games, either.
② -- I can’t play football.
-- Nor/Neither can he.
③ --Yao Ming isn’t a football player.
--Nor/Neither is Yi Jianlian.
④---Li Lei can’t dance.
---Nor can Tom.
⑤---I don’t like eating apples.
---Neither do I.
⑥--He doesn’t do his homework carefully.
---Nor do they.
⑦---Li Ming isn’t a good student.
---Nor is Mary.
注意：如果上一句是肯定句，则用“ So+助动词/be动词/情态动词+主语”句型。
该句型也必须具备3个条件：
A.上句为肯定句
B.上一句的谓语是同一种形式
C.该上句主语与下句主语不一致。
例如，
助动词：do,did,does,will,have,has...
be动词: am,is ,are ,was ,were...
情态动词:can,could,may,should,must,...。例如：
① -- I like Jackie ’s action movies.How about you ?
-- So do I .
②--He can swim.
--So can she.
=She can swim, too.
③ －Bruce Lee is a famous actor.
－So is Jet Li.
=Jet Li is a famous actor,too.