Question

Not until he took off his dark glasses ___________ he was a famous film star

1. A.
   had I found
2. B.
   did I find
3. C.
   I found
4. D.
   found I

Answer 1

B
考查時(shí)態(tài)及主謂倒裝，句意：直到他摘下他的墨鏡時(shí)，我才發(fā)現(xiàn)他是一個(gè)著名的影星。Not until謂語句首時(shí)，主語采用部分倒裝，助動(dòng)詞提前。結(jié)合語境可知主語描述的是過去某時(shí)的動(dòng)作，助動(dòng)詞用一般過去時(shí)態(tài)。選B。