11.　 原则上，复句之后的附加问句是和主句一致，与从句无关。如： She said her husband had gone abroad, didn’t she? People shouldn’t tell a lie unless it is necessary, should they? (例外)主句是(第一人称)I suppose / think / consider / believe / imagine / guess时，附加问句要以名词从句谓依据。如： I suppose he ought to have known that, oughtn’t he? I don’t suppose anyone will volunteer, will they?

10.　 前者的主语部位是there时后者的主语部分仍用there。 如： There won’t be any trouble, will there? There’s no one else in the room, is there?

9.　　　 前者的主语是句子或短语时，后者的主语用it。如： What she said was not believable, was it? Being idle is the cause of his failure, isn’t it?

8.　　　 前者的主语若是no one, none, neither, nobody, anybody, anyone, 或是指人时的all, these, those, 后者的主语都用they。 如： Nobody should drop litter on pavements, should they? No one would object, would they? Neither of them complained, did they? Those over there are your students, aren’t they?

7.　　　 前者的主语若是nothing,　 anything, something, everything, 或是指非人的all, 或是非指人的指示代词that, this, 由于后者的主语必须时人称代词，若以一律用it。如： Nothing can stop our going, can it? All we want is peace and prosperity, isn’t it? That was the last bus, wasn’t it?

6.　　　 前者和后者的时态必须相同。如： Your mother played the piano wonderfully, didn’t she?

5.　　　 前者若是“I am”，后者在正式的场合用“am I not?“，在非正式的口语中则用”aren’t I?”。如： I am late, am I not (or aren’t I)?

4.　　　 前者的动词是have/ has /had而含义是“有”时，后者仍可用have /has /had, 但是美语中常用do /does/did; 如果含义不是“有”，一律用do /does/did。如： He has a good memory, hasn’t (or doesn’t) he? You had ( = received) a letter from home this morning, didn’t you? (不可以用hadn’t you?) Your father has (= takes =eats) bread and milk for breakfast, doesn’t he?(不可以用hasn’t he?)

3.　　　 前后的助动词必须相同，前者若无助动词，后者则用do /does/did。如： You must obey your parents, mustn’t you? (例外) 前者若是used to(表示过去的习惯)，后者虽可用usedn’t, 但口语中通常都用 didn’t.如： You used to have a picture on that wall, didn’t (or usedn’t) you?

2.　　　 前者是肯定时后者用否定，前者是否定时后者用肯定。所谓否定，不限于动词部分有否定的字not, 只要有no, no one, none,　 neither, nobody, nothing, few, little, hardly, scarcely, barely, rarely, seldom等否定的字都视为否定，后者都改用肯定。如： He has few good reasons for doing so, has he? You have very little time for writing, have you? He seldom gives his wife a present, does he? You’ve hardly slept at all this week, have you? Nobody came while I was out, did they?