方法一：利用同（近）义词进行转换在进行同义句转换时，可以把句子中的某个词用词性相同的同义词、近义词进行替换，以使其结构保持不变。
常见的英语同义词有：reach（到达）=get to=arrive in/at， happen（发生）=take place， join（参加）=take part in， like（喜欢）=love=enjoy=be fond of， finally（最后）=at last=in the end， look after（照顾）=take care of，movie（电影）=film，advice（建议）=suggestion，have fun（玩得开心）= have a good/great time=enjoy oneself， fast（快，迅速）=quick， beautiful（漂亮的）=pretty=goodlooking，begoodat（擅长）=dowellin等。例如：
1. 每年我们都可以去那儿待一段时间享受享受。We can stay there for a long time and have fun every year.=We can stay there for a long time and have a good time every year.=We can stay there for a long time and enjoy ourselves every year.2.别担心，明天我妈妈会来照看孩子。Don’t worry，my mother will look after the kids tomorrow.= Don’t worry，my mother will take care of the kids tomorrow.3.他们三天前就到达了北京。They reached Beijing three days ago.=They got to Beijing three days ago.= They arrived to Beijing three days ago方法二：利用反义词的否定式进行转换在英语中，许多词汇的否定式往往与其对应的反义词或词组同义。在进行同义句转换时，不妨考虑反义词的否定式。如：fall behind（落后，跟不上）=not catch up with；be different from（不同于）= be not the same as；weak（瘦弱）=not strong；be weak in（不擅长）= be not good at；lose interest in （对……失去兴趣）= be not interested in等。例如：
1. 很多女孩子不擅长体育运动。Many girls are weak in sports.= Many girls are not good at sports.2.驾船和开车不同。Driving a boat is different from driving a car.=Driving a boat is not the same as driving a car.3.小女孩落在了她哥哥后面。The little girl fell behind her brothers.=The little girl couldn’t catch up with her brothers.当然，有些词不用反义词的否定式，直接利用反义词也可以进行同义句转换，此时特别要留意上下句子之间主语的互换。例如：
1. Tom stands behind Jack.汤姆站在杰克后面。=Jack stands in front of Tom.杰克站在汤姆前面。
2. I borrowed a book from her.我向她借了一本书。=She lent a book to me.她借给我一本书。
3. English is more popular than French.英语比法语更流行。= French is less popular than English.法语不及英语流行。方法三：利用词性变化进行转换在进行同义句转换时，除了使用同义词、近义词以及反义词外，还可以利用词性的变化进行句式转换。例如：
1. 谢谢你帮了我很多忙。Thank you for helping me a lot.= Thank you for giving me a lot of help.2.他们上个星期天参观了博物馆。They visited the museum last Sunday.=They were on a visit to the museum last Sunday.3.昨晚雨下得很大。The rain was heavy last night.=It rained heavily last night.4.酒后駕车很危险。Drunk driving is very dangerous.= Drunk driving is in a great danger.5.这对双胞胎长得很像，但性格不同。The twins look alike， but their characters are different.= The twins look alike， but they have differences in the characters.
