Question

have的两种否定形式和用法是什么？

Answer 1

have
两种词性,1:实义动词:表示有.变以成否定句的时候在have
前用donot或doesnot来否定.eg:I
have
some
money
.否定句====I
donot
have
any
money
.
2.助动词.无实义,在句中构成一完成时态,这个时候变成否定句的时候在have后加not
.eg:I
have
played
piano
for
10
years.否定句====I
havenot
played
piano
for
10
years.

Answer 2

当have是实义动词时，变为否定前面要加助动词do not or does not;example: He has a headache.变为否定：He does not have a headache.当have 是助动词时，前面直接加not.example:I have already done my work。变为否定:I have not already done my work.