电动汽车不仅减少排放，维护成本也更低。
Not only do electric cars reduce emissions, but they also have lower maintenance costs.
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not英 /nɒt/|美 /nɑt/
only英 /ˈəʊnli/|美 /ˈoʊnli/
do英 /duː/|美 /du/
but英 /bʌt/|美 /bʌt/
also英 /ˈɔːlsəʊ/|美 /ˈɔlsoʊ/
解释
否定状语"not only"前置导致主谓倒装，do+主语+原形；"but...also"引出第二个并列分句。
Not only do electric cars reduce emissions, but they also have lower maintenance costs.
否定状语"not only"前置导致主谓倒装，do+主语+原形；"but...also"引出第二个并列分句。