Wheatkid
幼苗
共回答了14个问题采纳率:78.6% 举报
1.这个问题要分两种情况来说.
2.如果是be动词构成的系表结构,则可以直接在be动词后面加上not表示否定.
如:I'm not a teacher.She isn't clever.
3.但是如果是其他系动词如楼上说的如状态系动词,持续系动词,表像系动词,感官系动词,变化系动词,终止系动词的话,则一般需要借助助动词don't/doesn't/didn't等才可以表示否定.
如:He doesn't look happy.He didn't feel well yesterday.
1年前
4