练习一:I have come in China for two years.My friends in 1.__________England sometimes write to me,ask me how long 2.__________I’ll stay here,when I’m thinking of returning 3.__________home.The answer of their questions is simple:I 4.__________do not know when I return home.At the moment,5.__________I have no reason to return back to England.I like 6.__________living in China;I enjoy meeting Chinese people 7.__________and travel around the country.My work is very 8.__________interested,and there are so many things I don’t know 9.__________about China that I hope to discover it in the future.10.________【答案解析】1.将come改为e是终止性动词,不与时间段连用。2.将ask改为asking。现在分词作伴随状语。3.在when前加and。when引导的从句与how long引导的从句是两个并列的宾语从句(作asking的宾语)。4.将of改为to。在answer,key,way,entrance等名词后,习惯上用介词to。5.在return前加will。这是将来时。注意:不要误以为when引导的是时间状语从句,用一般现在时代替将来时。事实上,when引导的是宾语从句。6.去掉back或将return改为go。因为return=go back。7.此行正确。8.将travel改为traveling。因为traveling与meeting并列,作enjoy的宾语。9.将interested改为interesting。表示某事物“令人……的”用-ing形容词;-ed形容词则表示某人“感到……的”。10.将it改为them。因为此处是指many things。练习二:Mary is my best friend.We’re all from Henan,1._____but now I live in Beijing when she lives in 2._____Guangzhou.We don’t look each other very often,3._____but we’re keep in touch all the time.I often write 4._____to Mary and telling her about the things that 5._____are happened at my company,and she often 6._____writes to me about her work.We talk on phone 7._____once a week.Sometime I call her on her 8._____car phone,or we send e-mail to each other.9._____We’re really luck.There are so many ways 10.____we can keep in touch with each other.【答案解析】1.all改为both。指Mary和作者两个人。2.when改为and或while。因为两个分句没有主从关系。而是并列关系,或者有对比或对照的含义。3.look改为see。因为此句意为“两个人不能经常见面(see)”。4.去掉keep或把we’re改为we。因为keep是动词,若不是进行时态或被动语态,动词前不用be。