1.My father has gong to Singapore ,and he will come back for three days.哪错了?2,Maria must come to join our party ,but she isn't sure yet.哪错了?

问题描述:

1.My father has gong to Singapore ,and he will come back for three days.哪错了?
2,Maria must come to join our party ,but she isn't sure yet.哪错了?

1。My father has gone to Singapore , and he will come back in three days.
2,Maria may come to join our party ,but she isn't sure yet.

for 改为 in.in three days是三天后的意思.
must 改为 may.因为后面说了她自己不确定.