He is good / expert at English.
He is at home in English.
He does well in English.
He knows English very well.
His English is excellent / perfect.
He has a good knowledge / command of English.
He was too tired to walk any farther. (简单句)
He was too tired, so he couldn’t walk any farther. (并列句)
He was so tired that he couldn’t walk any farther. (复合句)
Since he was too tired, he couldn’t walk any farther. (复合句)
Let’s do sth, shall we? = Shall we do sth?
Let sb do sth, will you? = Will you let sb do sth? Do sth, will you? (用以征询意见)
Do sth, won’t you? (用以表达邀请) Do sth, can you? (用以表达不满)
Do sth, can’t you? (用以表达责备)
Don’t do sth, will you? (用以表达建议)
Let’s go and have a look at the flower show, shall we? 我们去看一下花展，好吗?
Let the boys do the job themselves, will you? 让孩子们自己干，好吗?
Come and do me a favor, will you? 过来帮我一把，行吗?
Come in and have a coffee, won’t you? 进来喝杯咖啡吧。
Don’t hesitate to ask for advice, will you? 要随时讨教啊。
(1)It’s kind of you to give us so much support.
改 It’s kind that you gave us so much support.
(2)Now the question is how to raise enough money.
改 Now the question is how we can raise enough money.
(3)Do you expect her to stay after that?
改 Do you expect she will stay after that?
(1)Our chief worry was her lacking in experience.
改 Our chief worry was that she lacked experience.
(2)I suggest leaving early for the airport.
改 I suggest we (should) leave early for the airport.
(3)She insisted on my staying a bit longer.
改 She insisted that I (should) stay a bit longer.
(1)Hearing this, they jumped with joy.
改 When they heard this, they jumped with joy.
(2)Those standing there are mostly disabled children.
改 Those who are standing there are mostly disabled children.
(3)Are you in favor of the suggestion put forward by Peter?
改 Are you in favor of the suggestion Peter put forward?
改 Are you in favor of the suggestion which was put forward by Peter?
(1)Our major problem was our lack of materials.
改 Our major problem was that we lacked materials.
(2)In case of fire, ring this bell.
改 In case there is a fire, ring this bell.
(3)Mary, a girl of strong character, refused to answer this question.
改 Mary, who was a girl of strong character, refused to answer this question.
(1)He wore a mask so as not to be recognized.
改 He wore a mask so that no one could recognize him.
(2)Tom is clever. He is also hard-working.
改 Tom is both clever and hard-working.
改 Tom is not only clever but also hard-working.
(3)I’ll write to you on hearing from her.
改 I’ll write to you as soon as I hear from her.
改 I’ll write to you the moment I hear from her.