Today,I design a paper cover,some English word need to use the typeface of "Times New Roman" while other English sentence need to use other typeface.
My trial
\documentclass[a4paper,UTF8,winfont]{ctexart}
\usepackage[top=2.8cm, bottom=2.5cm, left=1cm, right=1cm]{geometry}
\usepackage{setspace}
\usepackage{amsmath}
\usepackage{times}
\usepackage{mathptmx}
\begin{document}
\title{Simulation of a SCARA robot with PD and learning controllers}
\section{PD controller}
\end{document}
However,the \usepackage{times} apply all english sentence to the typeface of "Times New Roman".Here,I encounted a problem,but I don't know how to solve it?Cab some help me?Thanks sincerely!

Times Roman(orTimes New Roman) is supposed to be used for certain words, which other font(s) are supposed to be using? Separately, are you required to use the pdfLaTeX format, or could you use either XeLaTeX or LuaLaTeX? – Mico Jan 11 '14 at 07:11Trebuchet MSorVijaya– abc Jan 11 '14 at 07:18