1) The lack of confidence puts him at a disadvantage.
1)
She would rather stay at home than go to a movie.
She prefer to stay at home than to go a movie.
2) Marry prefers my staying outside waiting for her. (语法无误,题目不完整我就自己造了……)
2) I hope (that) my lack of experience will not put me at a disadvantage.
2) We have never seen him (ever) since he left the city.
1) They have not written letters to each other (ever) since.
Lacking confidence puts him at a disadvantage
I hope my lack of experience won't put me at a disadvantage
Ever since then hey have never written letters to each other
Ever since he left the city, we have never met him