2. (No matter) how good your grades are, you (all) can't be complacent!
3. Although I have worked so hard, my grades are still not as good as yours
4. Some people talk a lot, but do very little.
5. No matter how hard it rains or how slippery the road is, we (all) have to report to work on time.
6. This realm (both) amazes and (also) comforts.
7. (No matter) how crowded it was, he (all) managed to squeeze through.
8、The houses of the courtyard are (both) connected with each other, (and) separated from each other, divided and united.
9, Lei Feng (though) dead, (but) his spirit is always in our hearts.
10, This rubber (is) not mine, (is) Li Ming's.
11、Such a residence (although) a little crowded, cluttered, (but) very suitable for people to communicate with each other.
12. (If) the water rises again, the riverbank (is) in danger.
13. (Even) if the difficulties are great, we (also) have to insist on going to school.
14. (If) the weather clears up tomorrow, the fall tour (will) be held as scheduled.
15、Morality(虽然) is a simple question of right and wrong, (but) it is difficult to practice.
16、Shanghai (not only) is an important industrial base, (also) is a scientific and cultural center.
17、Things in the world (both) have simple connections, (and) there are quite a few complex connections.
18, honesty is a virtue, (no matter) what you do, (are) to speak honestly, do honest things.
19. (If) you want to take a calligraphy course, (you) have to take the initiative to apply for it.
20. (Don't) rely on others, (to) rely on yourself.
21. Liu Hulan would rather sacrifice herself than betray her comrades.
22, Sunday you (either) go to the park, (or) go to grandma's house.
23. Mom watches TV and knits sweaters.
24、When you do something (only) persistently, (you can) succeed.
25. Xiao Ming is not only good at studying, but also good at sports.
26、I (not only) finished my homework, (also) wrote some extracurricular questions.
27、This pen (is) not yours, (is) Little Red's.
28. (Since you are) a student, (you) should study hard.
29 (because) it is raining, (so) we can't have PE lessons outside.
30, ( only ) Yin Endeavor to study, ( only ) can improve your grades.
31, (If) my father doesn't work tomorrow, he (就) will take me to the park.
32. For the safety of the motherland's borders, (even if) it is worthwhile to endure loneliness, (also) it is worthwhile.
33. Lu Xun (not only) is a great writer, (also) is a great thinker and revolutionary.
34. (Since) time is precious, (then) we should treasure it more.
35. (Because) the river crosses length and breadth, (so) dinghies have become the main means of transportation.
36、The dinghy (not only) is very fast, (and) it can also make sharp turns.
37、Books (although) read a lot, (but) will not be spirit and live application is not.
38, read the story, we (not only) know a lot of the mysteries of the sea, (also) inspired the interest in exploring science
39, (although) encountered cloudy and rainy weather can not see the sun, the national flag (or) still according to the time of sunrise rose high in Tiananmen Square.
40. (Because) the ocean of knowledge is boundless, (so) there is no end to learning.
41. (Only) if everyone is civilized and hygienic, our environment (will) be better.
42、Weekend evenings, I (一边) watch TV and (一边) listen to music.
43、Wang Min is a multi-talented girl who (not only) can sing, (and) can dance.
44. (If) his criticism of you is correct, you (就) should accept it with an open mind.
45. (If) you don't comprehend what's in front of you, (you) shouldn't hurry to learn what's behind you.
46, I (the reason why) I love my hometown, (because) it is the place where I grew up.
47、Yesterday's TV program was wonderful, (except) children's songs and dances, (and) my favorite "Animal World".
48、（Because）Wuhan is particularly hot in summer, (so) it is known as the "hot stove".
49. (If) you are busy at work, (then) don't come.
50（假使）换换一下出次序，（就）能轉败为胜
Note: I haven't touched the language for a long time (I'm a student of science and technology),
Some sentences may not be very fluent, I hope it can help you~