要不是那位匿名捐助者出手相助，收容所几周内就得关门了。
If it were not for the anonymous donor's intervention, the shelter would have closed its doors within weeks.
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If英 /ɪf/|美 /ɪf/
it英 /ɪt/|美 /ɪt/
were英 /wɜː/|美 /wər/
not英 /nɒt/|美 /nɑt/
for英 /fɔː/|美 /fɔr/
解释
"If it were not for" 是完整形式，语体正式，引出反事实条件。主句 would have closed 表达若无此条件本会发生的结局。
If it were not for the anonymous donor's intervention, the shelter would have closed its doors within weeks.
"If it were not for" 是完整形式，语体正式，引出反事实条件。主句 would have closed 表达若无此条件本会发生的结局。