1、如果
... in hope of：怀着……的希望 on condition that：如果；在…条件下； 条件是；在 now that:既然；既是；由于；鉴于 ...
2、条件是
provided that 只要，如果 as long as 只要 on condition that 条件是，如果 the moment / the instant / the minute (that) 一……
3、假如
... in hope of：怀着……的希望 on condition that：假如；在…条件下； 条件是；在 now that:既然；既是；由于；鉴于 ...
4、只要
... on behalf of 代表某人；为某人；以某人名义 on condition that 若...则；在...的条件下；只要...就 on earth 究竟；到底；全然，一点也(强调否定)；世界上 ...
on the condition that在……条件下;在;在…条件下
on n condition that如果
on one condition that有一个条件
except on the condition that而不
on condition that on duty上班
on condition that only if只要
on that condition在那种条件下