动词不定式选择题1-Shall I give the dog a chocolate?-It's better-----

英语中对动词不定式进行省略时要保留不定式符号to,答语完整形式为,It's better not to give the dog a chocolate.动词不定式短语为真正的主语,it为形式主语.如果答语主语是you,则可用you'd better not.