Romeo -------------(be) in love with Rosaline before he --------(see) Julilet.(P82)

问题描述:

Romeo -------------(be) in love with Rosaline before he --------(see) Julilet.
(P82)

had been ,saw 过去的过去

罗密欧-------------(被)爱上听话之前他--------(见)朱丽叶。

Romeo had been(be) in love with Rosaline before he saw(see) Julilet.
他看到朱丽叶已经发生在过去,而且跟洛塞尼亚相爱发生在看到朱丽叶之前,也就是过去的过去.
所以后面用一般过去时,前面用过去完成时.

was saw ...