Question

4．約翰過(guò)去周末常和他的朋友在網(wǎng)上聊天．（use；chat；Intenet）John used to chat with his friends on the Internet at weekends．．

Answer 1

分析 John used to chat with his friends on the Internet at weekends．

解答 答案：John used to chat with his friends on the Internet at weekends．表達(dá)的是過(guò)去常常結(jié)合use用used to do sth，主語(yǔ)John，與某人聊天結(jié)合chat用chat with sb，在網(wǎng)上on the Internet，at weekends．周末，故答案John used to chat with his friends on the Internet at weekends．

點(diǎn)評(píng) used to表示過(guò)去常常做某事．
例句：I used to play football after school．過(guò)去我常常在放學(xué)后踢球．
be used to do的意思是被用來(lái)做某事；be used to doing的意思是習(xí)慣于做某事．
be used to 被用來(lái)做
used to+do："過(guò)去常常"表示過(guò)去習(xí)慣性的動(dòng)作或狀態(tài)，但如今已不存在．
Mother used not to be so forgetful．
Scarf used to take a walk．（過(guò)去常常散步）
be used to+doing：對(duì)…已感到習(xí)慣，或"習(xí)慣于"，to是介詞，后需加名詞或動(dòng)名詞．
He is used to a vegetarian diet．
Scarf is used to taking a walk．（現(xiàn)在習(xí)慣于散步）