倒装
p185
Never before ______ she seen anybody who can play tennis as well as Robert. ❌
answer
does ❌
has ✅
never否定词位于句首，句子要使用倒装语序，根据句意判断可知是从过去一直到现在的情况，用现在完成时。
Not until he retired from teaching three years ago ______ he consider having a holiday abroad. ✅
answer
did (three years ago 可看出是过去时)
This is not my story, nor ______ it the whole story. ❌
answer 🤖
Seldom ______ I make any mistakes during my past few years of working. ❌
answer 🤖
have ❌
did ✅
past few years提醒需用过去时，
during my past few years of working → 明确过去时间段（已结束）→ 需用一般过去时！
Little ______ he know that this region was so rich in natural resources. ❌
answer
dose ❌ (我看到know, 所以我感觉是现在时)
did ✅
其实倒装结构本来就是要加 动词原形 , 所以还要根据从句的时态来确定主句的时态
No sooner ______ his luggage been loaded than the bus started off. ✅
answer
had
Seldom ______ we been treated in such a rude way. ❌
answer 🤖
had ❌
have ✅
Seldom/Rarely/Never 等词在句首时，必须用 现在完成时（have） 或 一般过去时（did），具体取决于时间范围
She never laughed, nor ______ she ever lose her temper. ✅
answer
我看到laughed是过去时, 所以我填:
did ✅ (6)
We mention the importance of giving up smoking once and again, but hardly ______ they realized it. ❌
answer 🤖
realized, 所以过去时:
did ❌
have ✅
主句的现在时（mention）暗示动作持续至今，因此从句需用现在完成时（have）表达结果的一致性。
Rarely ______ a discussion drawn so much attention from all around the world. ✅
answer
drawn是过去分词, 让我想到了be done与have done, 被动不太可能, 所以是现在完成时have done:
has ✅ 💥💥💥
Only after the storm was over ______ we start off. ❌ 句意不理解
answer
was, 所以过去时:
did ❌
could ✅
Only under special circumstances ______ freshman permitted to take make-up tests. ✅
answer
take 是复数, 所以freshman是复数, 所以were/are, 但take是原型, 所以填:
are ✅
California relies heavily on income from fruit crops, so ______ Florida. ✅
answer
does ✅
I do not have my own room, ______ does Tim. ✅
answer
neither
Short ______ he is, Martin can reach the branch of that tall tree at the gate. ✅
answer
as
Backward technologically ______ we are for the moment, we have perfect faith in our ability to catch up with the developed countries in time. ✅
answer
as
Hard ______ she worked, she failed again in the test and felt very depressed. ✅
answer
as