if .at the time,the British had.新概念英语第二册64课文,if .at the time,the British had not feared invasion,it would have been completed说说这课文的顺序,即为什么前面用过去完成式,后面用现在完成式,

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if .at the time,the British had.新概念英语第二册64课文,if .at the time,the British had not feared invasion,it would have been completed说说这课文的顺序,即为什么前面用过去完成式,后面用现在完成式,

if .at the time,the British had.新概念英语第二册64课文,if .at the time,the British had not feared invasion,it would have been completed说说这课文的顺序,即为什么前面用过去完成式,后面用现在完成式,
if .at the time,the British had.
新概念英语第二册64课文,
if .at the time,the British had not feared invasion,it would have been completed
说说这课文的顺序,即为什么前面用过去完成式,后面用现在完成式,

if .at the time,the British had.新概念英语第二册64课文,if .at the time,the British had not feared invasion,it would have been completed说说这课文的顺序,即为什么前面用过去完成式,后面用现在完成式,
这是个虚拟语气
你应该学过错综复杂的虚拟语气
‘即前后的时态不一样
前面说的是如果过去英国不害怕被侵略的话,后面是它现在就不会怎么样……
所以说虚拟语气前后时态可以不一样.

这是虚拟语气,前面用过去完成时后面用将来完成时。if....had done.... would have done